The correct answer is (a) Jawaharlal Nehru.
Jawaharlal Nehru was the first Prime Minister of India and the main architect of its foreign policy. He believed that India should remain independent of both the Western and Soviet blocs, and that it should pursue a policy of non-alignment. This policy was based on the principles of peace, friendship, and cooperation with all countries.
Nehru’s policy of non-alignment was successful in keeping India out of the Cold War. It also helped India to play a leading role in the Non-Aligned Movement, which was a group of countries that were committed to non-alignment.
The other options are incorrect because they were not the first Prime Ministers of India. Mrs. Indira Gandhi was the third Prime Minister of India, Lal Bahadur Shastri was the second Prime Minister of India, and Morarji Desai was the fifth Prime Minister of India.