Who among the following is NOT a Bharat Ratna recipient?

Baldev Singh

The correct answer is Option (4) - Baldev Singh

Baldev Singh is not a Bharat Ratna recipient.

Nelson Mandela, Khan Abdul Ghaffar Khan, and Mother Teresa are all recipients of the Bharat Ratna, which is India's highest civilian award. Baldev Singh, on the other hand, was an Indian political leader and a prominent figure during the Indian independence movement, but he did not receive the Bharat Ratna.