The Great Bath is one of the well-known structures among the ruins of the ancient Indus Valley Civilization at Mohenjo-daro in Sindh, Pakistan. Archaeological evidence indicates that the Great Bath was built in the 3rd millennium BCE, soon after the raising of the "citadel" mound on which it is located.

In many cities, archaeologists have found rows of pots, or ceramic rings arranged one on top of the other. These are known as ring wells. These seem to have been used as toilets in some cases, and as drains and garbage dumps

Great Bath is an ancient structure at Mohenjo-daro, Pakistan. The Great Bath dates to the 3rd millennium BCE and is believed to have been used for ritual bathing. Hence, Option A is correct.

More than a thousand settlements are now known from the Indus valley civilization. The civilization is known to have had a unity of culture, art, script, and technology. The largest city, Mohenjo Daro is thought to have reached a population of approximately 30,000, suggesting a total population of approximately 5 million people. Sun-dried bricks were used for infill, and burnt bricks were used for the drain and sewer linings. It would seem that a standard brick size was developed and used throughout the Indus cities.

One of the most noteworthy characteristics of Mohen-jo-Daro was that the main entrance of the houses opened in the side lane instead of opening to the main road. This was aimed at keeping the interiors dust free and also to provide greater privacy to the inhabitants. 

The Indus valley cities faced a serious threat from annual floods. To overcome this threat Mohenjo-Daro had nine levels of occupation towering over 300 feet above the present flood plain. Excavations reveal that the city was flooded more than seven times. So the houses were built on high plinth.

The meaning of the word Mohenjo-Daro is 'Mound of the dead'. It is a well planned and organized town. It has two very important buildings; The great Bath and the Great Granary. The Great Bath was perhaps used for ritualistic purposes. Located at the center of the citadel, it is remarkable for beautiful brickwork. The Great Granary, which was perhaps the largest building of the Indus Valley Civilization suggests extreme centralization as the ruling authorities must have first brought the agricultural produce here and then redistributed it.

The drainage system of Mohenjo-Daro was very impressive. Water flowed from the house into the streets which had drains. The street drains were equipped with manholes. Perhaps no other bronze age civilization gave so much importance to health and cleanliness as the Indus Valley people did.

The most important public space of Mohenjo- Daro seems to be the Great Bath, comprising the tank which was situated in the citadel mound. It is an example of beautiful brickwork. It measures 54.8 meters long and 32.90 meters wide. Flights of steps at either end lead to the surface. There were side rooms for changing clothes. The floor of the Bath was made of burnt bricks. It is suggested that the Great Bath served ritual bathing, which has been so vital to any religious ceremony in India. So all the given statements are correct.

The bull was the most depicted animal of the Indus Valley Civilization. It was depicted on their seals and tablets. These were Zebu Bull or humped cattle which were probably domesticated by the Harappans for agriculture. Along with Bull, Rhinoceros and Elephants were also depicted by them.

Harappan culture is recognized for advanced metallurgical techniques. Archaeologists have discovered usage of copper, bronze, tin, silver and gold. It was the first time that silver was extracted and used in Indus valley Civilisation. Its usage was mainly in the ornaments such as hair beads, necklace etc. Though it was also hammered to form thin sheets which could have been used to garnish eatables such as sweets. 

A seal referred to as Pashupati Seal found in Mohenjo-daro depicts a central human figure surrounded by four wild animals, an elephant and tiger on one side and a rhinoceros and a buffalo on the other side. Below the dais are two deer. He is believed to be the central deity and presumed to be earlier depiction of Lord Shiva.

People of Harappan civilisation had domesticated a wide variety of animals. It included camel, buffalo, sheep, dog, pig, oxen etc. Camels were used as a means of transportation while Oxen was used by farming community for cultivation. Dogs and cats were kept as pets. Other animal such as buffaloes and pigs were used as source of food. We came to know about the domesticated animals through their presence on seals and pictures engraved on tablets. Interestingly there is no evidence of Horses being domesticated during harappan period. 

The Pipal tree or Acasia tree was worshipped as the tree of life which was defended by guardian spirits (such as bull, snake or goat) against evil forces such as a tiger. Artistic sense of people is visible in seals, ornaments, clay and bronze figurines. Great Bath or Public pools have been excavated at Mohan-jodaro as well as Dholavira which indicates toward a ritualistic purification bath ceremony observed by resident of Harappan civilisation.