The correct answer is (a) Dr. Radha Krishnan.
Dr. Radhakrishnan was the first Vice President of India and the second President of India. He was a philosopher, statesman, and diplomat. He was known for his scholarship and his contributions to Indian philosophy. He was also a strong advocate for secularism and democracy.
Dr. Rajendra Prasad was the first President of India. He was a lawyer and a freedom fighter. He was known for his integrity and his commitment to the Indian Constitution.
Dr. Zakir Hussain was the third President of India. He was a scholar and a politician. He was known for his commitment to education and his promotion of communal harmony.
Dr. Abdul Kalam was the 11th President of India. He was a scientist and a missile scientist. He was known for his contributions to the development of India’s nuclear and missile programs.
Dr. Radhakrishnan was the only President of India who was also a philosopher. He was known for his scholarship and his contributions to Indian philosophy. He was also a strong advocate for secularism and democracy.