The correct answer is option 2, Lal Bahadur Shastri. The Tashkent Agreement was signed between India and Pakistan on January 10, 1966, in Tashkent, Uzbekistan. It was a peace agreement that was brokered by the Soviet Union after the Indo-Pakistani War of 1965.

Let`s examine the other options to understand why they are not correct.

Option 1: Pandit Jawaharlal Nehru was the first Prime Minister of India. However, he was not associated with the Tashkent Agreement as he passed away in 1964, before the agreement was signed.

Option 3: Indira Gandhi, who later became the Prime Minister of India, is not associated with the Tashkent Agreement. She served as the Prime Minister from 1966 to 1977 and again from 1980 to 1984, but she was not directly involved in the negotiations or signing of the agreement.

Option 4: Morarji Desai was the Prime Minister of India from 1977 to 1979. He is not associated with the Tashkent Agreement as it was signed before he became Prime Minister.

In conclusion, Lal Bahadur Sh