Author of the book 'My Experiments with Truth' is

An autobiography is a self-written account of a person's own life, and identifying such a book's author means matching the specific title, its language of origin, and its documented publication history to the individual who wrote it, not to any other prominent figure who wrote in a related genre.

'My Experiments with Truth' is the widely used English title of Mahatma Gandhi's autobiography. Gandhi wrote the original in Gujarati, serializing it in the weekly journal Navjivan between 1925 and 1929; the work is commonly known in Hindi as 'Satya Ke Prayog', and it was rendered into English by his secretary Mahadev Desai. TPSC's official answer key for this Sub Inspector Excise 2014 paper also records this authorship.

• Sri Aurobindo (Aurobindo Ghose) is known for philosophical works such as The Life Divine and Essays on the Gita, not for a personal autobiography under this title.

• A. P. J. Abdul Kalam's autobiography, Wings of Fire, was written in English (with Arun Tiwari) and published in 1999, covering his early life and career as an aerospace scientist with DRDO and ISRO, years before his presidency began in 2002.

• Nirad C. Chaudhuri's autobiographical work is titled The Autobiography of an Unknown Indian, a separate memoir under its own name.

So the author of 'My Experiments with Truth' is Mahatma Gandhi.