Who among the following is the author of the book ‘The Secret of the Veda’?

The correct option is Sri Aurobindo.

Detailed Explanation:
'The Secret of the Veda' is a prominent collection of essays written by the Indian philosopher, yogi, and spiritual leader Sri Aurobindo. Originally published in his monthly review journal, Arya, between 1914 and 1920, the book offers a symbolic and psychological interpretation of the ancient Vedic hymns.
Unlike traditional commentators who often viewed the Vedas primarily as ritualistic texts, Sri Aurobindo argued that the Rig Veda contains a hidden, psychological meaning depicting the inner spiritual evolution and transformation of human consciousness.