Explanation:

- Option 1: Zubin Mehta is a renowned conductor, known for his work with major orchestras worldwide, but he has not won a Grammy as a composer.

- Option 2: Zakir Hussain, the tabla virtuoso, has won Grammy Awards, but not as the first Indian composer to do so.

- Option 3: AR Rahman won Grammys for his work on "Slumdog Millionaire," but wasn't the first Indian composer to do so.

- Option 4: Pandit Ravi Shankar was the first Indian composer to win a Grammy Award. He won multiple times, starting in 1967, and played a crucial role in popularizing Indian classical music globally.