Who coined the phrase 'Unity in Diversity' to describe India?

Jawaharlal Nehru, India's first Prime Minister, coined the phrase 'Unity in Diversity' to describe India in his famous book 'The Discovery of India' (1946). Nehru used this phrase to capture the essence of Indian civilization, which integrates multiple religions, languages, cultures, and traditions into a single nation. Hence, option (1) Jawaharlal Nehru is correct.