Discrimination and differences are found among different caste , sex, religion etc but the base for this difference is created  by birth.

Hunting age was the period in which hunter-gatherer had to catch or find everything they ate. They moved from place to place in search of food. Pastoral age consisted of shepherds herding livestock in open grassland areas, according to the availability of water and pasture. Agricultural age involved improved crop productivity due to the adoption of new farming techniques. The industrial age is attributed to the advent of power driven machines, steam engines, power looms which changed the economic and social condition of humans. Option B Hunting Age is the correct answer, as the most primitive stage.    

In India census is carried out at an interval of 10 years. 

As per census 2011, Literacy rate in Kerala is 93.91%

Literacy rate refers to the number of people who are of 7 years and above and can read and write.

The Article 30 of Indian Constitution, speaks about the rights of minorities to establish and administer educational institutions. Minorities bases on any religion or language enjoy this right. The state while granting aid  to educational institutions cannot discriminate on the grounds of religion or language. Hence, option D is the correct answer. 

As per census 2011 :-

Sex ratio denotes the number of females per 1000 males. As per census 2011, Kerala has the highest sex ratio I.e., 1084 females per 1000 males.

• In India census is issued at an interval of 10 years. 
  
• As per the census, 2011 literacy rate of India is 74.04 %.

In India the lowest literacy rate is found in Bihar. Literacy rate in Bihar as per census 2011

The birth rate is the total number of live births per thousand of a population in a year or period. The birth rate is used to calculate population growth of a country.

Sex ratio is the number of females present per 1000 males in an area. Sex ratio of India according 2011 census is 940 females per 1000 males. Kerala state of India has highest sex ratio.

The composition of a population in terms of the proportions of individuals of different ages is called age structure. It divides population among the ages like the number of individuals aged 0–4, 5–14, 15–29, 30–44, 45–59, 60–69, over 70.

In a fast-growing population with a high proportion of young people representing younger ages at the bottom and older ages at the top will have triangle shaped age structure because young people who are represented at the bottom are more in number than that of the old aged individuals in a growing population.

The general fertility rate (GFR) is the total number of live births per 1,000 women of reproductive age. The reproducitve age is ususally considered as population of 15-45 years. Hence the denominator in general fertility rate pertains to Mid year population of 15-45 years.

Population density is defined as the number of people present per square kilometer. According to 2011 census, Dibang Valley of Arunachal Pradesh and Samba Valley of Jammu and Kashmir have least population density. According to 2011 census, Dibang valley has 1 person per square kilometer and Samba valley had 353 persons per square kilometer.

According to 2011 census, Punjab does not occupy first five places in literacy rate. It has a literacy rate of  75.84 %. Kerala has highest literacy rate followed by Lakshadweep and then Mizoram.

Sex ratio is the number of females present per 1000 males in an area. According to 2011 census sex ratio of India is 940 females per 1000 of males.

The composition of a population in terms of the proportions of individuals of different ages is called age structure. In a developed country the age structure pyramid takes the shape of a column and they have fewer young and reproductive-aged individuals.

The population born after baby boomers is referred to as X-generation. This generation had reduced adult supervision compared to previous generations, a result of increasing divorce rates and increased maternal participation in the workforce.

Sex ratio is the number of females present per 1000 males in an area. According to the question 943 implies the number of female population for every 1000 males of that particular area.

Population density is defined as the number of people present per square kilometre. Population density of India according to 2011 census is 382 persons per square kilometres.

Generation born before 1964 and after World War II is classified as baby boomers. This is because after second world war there was a high birth rate because of the ideal conditions for growth and survival of people.

Population density is defined as the number of people present per square kilometre. Population density of India according to 2011 census is 382 persons per square kilometre. Delhi has the highest population density which is 11,297 per square kilometre.

Sex ratio is the number of females present per 1000 males in an area. Puducherry has highest sex ratio after Kerala. It is 1,031 females for every 1,000 males.

Sex ratio is the number of females present per 1000 males in an area. Sex ratio of India according 2011 census is 940 females per 1000 males. Kerala state of India has highest sex ratio.

Population density is defined as the number of people present per square kilometre. Population density of India according to 2011 census is 382 persons per square kilometre. Bangladesh has more population density than India which is 51,703 persons per square kilometre.

Population density is defined as the number of people present per square kilometre. Population density of India according to 2011 census is 382 persons per square kilometre.

Arunachal Pradesh is the state of India with least population density. According to 2011 census, population density of this state was 17/square kilometre.

The state with lowest literacy rate is Bihar. The literacy recorded in Bihar is 63.82 according to 2011 census. The state has a male literacy of 73.39 and a female literacy rate of 53.33%.

Working population is nothing but the people engaged in a productive work which earns them the wages to live. Working population includes those persons who fall in the age group of 15-59 years.

Literacy is traditionally meant as the ability to read and write. In modern time literacy include the ability to use language, numbers, images, computers and other basic things to understand, communicate and gain useful knowledge. According to census 2011, the literacy rate of India is found to be 74.04%. The male literacy rate is 82.14% and the female literacy rate is 65.46%.

According to 2011 census literacy rate of India was 74.04%. Highest female literacy rate is seen in Kerala. Kerala also has a record of highest overall literacy rate. The female literacy according to 2011 census in Kerala is 91.98%.

Working population is nothing but the people engaged in a productive work which earns them the wages to live. In order to classify a person as worker, by census of India, he should at least work for 183 days.

Sex ratio is the number of females present per 1000 males in an area. Child sex ratio is the number of girl children for 1000 boys under age of 0-6 years.

Sex ratio is the number of females present per 1000 males in an area. Child sex ratio is the number of girl children for 1000 boys under age of 0-6 years. According to 2011 census, child sex ratio is recorded highest in Mizoram which is 971 per 1000 boys.

Graphical representation of total population of a country, male and female population ratio and old and young people ratio is classified as population pyramid. There are different types of it which include:

• Stationary pyramid: in such countries, people of all the ages are present more or less equally.
  
• The expansive pyramid is wide at younger ages and narrows at older ages.
  
• The constrictive pyramid is narrow at the bottom, which means younger people are less in number.
  

Serchhip is the most literate districts in India. It is one of the districts of Mizoram. It has a literacy rate of 97.91%.

As per the census of India, an urban town is defined as a place which has a population density of 400 persons per sq km, more than 50% of the population should be engaged in agriculture and size of the population should be more than 5000. The mere presence of municipality does not make it a town according to the census of India.

Tool used to measure distribution of population is called population density. Population density is defined as the number of people present per square kilometre. Population density of India according to 2011 census is 382 persons per square kilometres.

The population density of India has gone up to 382 persons per square kilometre in 2011 from 325 persons per square kilometre in 2001. The rate of increase in density of India has exhibited a sharp decline during 2001ó2011 (17.5 per cent) as compared to 1991ó2001 (21.7 per cent).