Only part (i) has an error with regard to the usage of a comma. In part (i) of the sentence, a comma must be placed to enclose additional thoughts –at its heart. Correct form - (i) Buddhism has, at its heart, the wisdom of understanding the mind. In part (ii) and part (iii), the commas have been placed correctly. Note: A comma is used before etc. when it follows more than one listed item, for example, plants, flowers, trees, rocks, minerals, crystals, etc.

Only part (i) has an error with regard to the usage of a comma. In part (i) of the sentence, commas must be placed to mark off a direct quotation from the rest of the sentence. In part (ii), there is no need for a comma and in part (iii), the commas have been placed correctly to separate a series of word groups. (i) “Realisation,” said Swami Vivekananda, (ii) “is real religion, all the rest is only preparation - (iii) hearing lectures, or reading books, or reasoning, is merely preparing the ground; it is not religion.”

Only part (ii) has an error with regard to the usage of a comma. In part (ii) of the sentence, a comma must be placed after the adverbial – Early on. (ii) Early on, Paulo dreamed of an artistic career. In part (i) and part (iii), the commas have been placed correctly. The commas have been placed to enclose additional thoughts.

Both part (i) and part (ii) have an error with regard to the usage of a comma. In part (i) of the sentence, a comma must be placed after the adverbial – One afternoon. In part (ii), a comma must be placed to mark off the direct speech from the rest of the sentence. In part (iii), the commas have been placed correctly. The correct form is - (i) One afternoon, they passed by the encampment of one of the tribes. (ii) “There’s no danger,” the boy said, when they had moved on past the encampment. (iii) And suddenly, two horsemen appeared from behind the travellers.

There is no error with regard to the usage of a comma in the given sentence. In part (i) and part (ii), there is no need for the usage of commas. In part (iii), the comma has been placed correctly to separate a series of words.

Only part (iii) has an error with regard to the usage of a comma. In part (iii) of the sentence, a comma must be placed to mark off a direct quotation from the rest of the sentence. (iii) “Everything in life is an omen,” said the Englishman. In part (i), the comma has been placed correctly. In part (ii), there is no need for a comma.

Only part (ii) has an error with regard to the usage of a comma. In part (ii) of the sentence, a comma must be placed after the word – Naturally. (Commas are placed after emphasising points of views). In part (i), there is no need for a comma; and in part (iii), the comma has been placed correctly to set apart the interjection.

There is no error with regard to the usage of a comma in the given sentence. In part (i), the comma has been placed correctly to set apart the interjection; and in part (ii), the comma is placed to introduce the question tag. In part (iii), the comma has been placed correctly after the adverbial.

Both part (i) and part (ii) have an error with regard to the usage of a comma. In part (i) of the sentence, a comma must be placed after the adverbial – At the supermarket. In part (ii), a comma must be placed after – two loaves of bread – in order to itemise word groups. In part (iii), there is no need for a comma. The correct form is - (i) At the supermarket, she bought (ii) two loaves of bread, a packet of Italian cheese, fresh herbs and vegetables, and a bar of butter (iii) to make her sandwiches for the picnic.

Only part (i) has an error with regard to the usage of a comma. In part (i) of the sentence, a comma must be placed to set off the comparative statements – ‘The stronger they are, the harder they fall...’In part (ii), there is no need for a comma; and part (iii), the comma has been placed correctly to set apart the adverbial.

Only part (ii) has an error with regard to the usage of a comma. In part (ii) of the sentence, a comma has been placed which is not needed. (ii) We must also meditate upon its meaning. There is no need for a comma in this part of the sentence. In part (i) and part (ii), the commas have been placed correctly.

Only part (iii) has an error with regard to the usage of a comma. In part (iii) of the sentence, a comma must be placed before the reinforcing statement – I promise.“I’ll be back in an hour, I promise,” he had said. In part (i) and part (ii), the commas have been placed correctly. In part (ii), the comma is placed after the emphasising point of view.

Both part (i) and part (ii) have an error with regard to the usage of a comma. In part (i) of the sentence, commas must be placed to set apart the name – Dr. Gerald Edelman. In part (ii), there is no need for a comma after the word much. The correct form is - (i) A Nobel Prize-winning neuroscientist, Dr. Gerald Edelman, has pointed out (ii) that the brain is much more like a process than a thing, (iii) and this process is continually evolving.

Only part (i) has an error with regard to the usage of a comma. In part (i) of the sentence, commas must be placed to enclose additional thought – Eddington said. Thus, the correct form is - (i) In the scientific reality, Eddington said, Earth is a speck of matter whirling around a mediocre star. In part (ii) there is no need for a comma; and in part (iii), the comma has been placed correctly.

There is no error with regard to the usage of a comma in the given sentence. In all the three parts, the commas have been used correctly to set apart names and persons.

Only part (iii) has an error with regard to the usage of a comma. In part (iii) of the sentence, commas must be placed to enclose the additional thought – in short. (iii) Everything, in short, depends upon how well you can build in silence. In part (i) and part (ii), the commas have been placed correctly.

Both part (i) and part (ii) have an error with regard to the usage of a comma. In part (i) of the sentence, commas must be placed to set apart the names – (i) R. K. Narayan’s brother, R. K. Laxman, is a famous cartoonist. In part (ii), there is no need for a comma. The phrase – the common man – is not being used as an additional thought or qualification and thus, it should not be enclosed with commas…In part (iii), the commas have been placed correctly to enclose a point of view – in all probability. The correct form is - (i) R. K. Narayan’s brother, R. K. Laxman, is a famous cartoonist. (ii) His depiction of the common man in his cartoons is loved by the masses. (iii) He is, in all probability, India’s premier cartoonist.

There is no error with regard to the usage of a comma in the given sentence. In parts (i), (ii), and (iii), the commas have been placed correctly. In parts (i) and (ii), the commas have been placed to enclose additional thoughts. In part (iii), the comma has been used to set apart the adverbial and also to separate a series of words.

Only part (iii) has an error with regard to the usage of a comma. In part (iii) of the sentence, a comma must be placed before the question tag – isn’t there? (iii) “There must be some way to get rid of it, isn’t there?” In part (i) and part (ii), the commas have been placed correctly. In part (i), the commas sets apart the interjection. In part (ii), the comma is placed after the emphasising point of view.

Only part (ii) has an error with regard to the usage of a comma. In part (ii) of the sentence, a comma has been used where there is no need for one. (i) The term homeopathy comes from (ii) two Greek roots that mean ‘similar suffering’; (iii) this points to the fundamental homeopathic principle that ‘like treats like’.