Give one word for:
Account of a person's life written by himself

Correct option is C

The correct one-word for the given group of words is (c) Autobiography.

An autobiography is an account of a person’s life written by the person themselves.
Autobiography (Hindi): आत्मकथा।
Example: Mahatma Gandhi's "The Story of My Experiments with Truth" is an example of an autobiography.

Meanings of the other options:

• Biography: (Hindi: जीवनी) An account of a person’s life written by someone else.
• Pessimist: (Hindi: निराशावादी) A person who tends to see the worst in everything.
• Optimist: (Hindi: आशावादी) A person who tends to see the bright side of things.