Correct the following sentence.

The Prime Minister of india is a good man.

Option A is the correct option. The unique name of the person, place, animal, and thing is known as a Proper noun. The noun is the name of a place, animal, or thing. Every particular person, place, animal, and thing is assigned a specific name which is called a proper noun. For example, Nina, Taj Mahal, Leo the dog, etc. Proper nouns always start with capitalised letters, no matter where they are placed in a sentence.