Who became the Prime Minister of India after Pt. Jawaharlal Nehru?

The correct answer is Option 2 - Lal Bahadur Shastri

When Nehru passed away, K. Kamraj, the president of the Congress party consulted party leaders and Congress members of Parliament and found that there was a consensus in favour of Lal Bahadur Shastri. He was unanimously chosen as the leader of the Congress parliamentary party and thus became the country’s next Prime Minister. Shastri was a non-controversial leader from Uttar Pradesh who had been a Minister in Nehru’s cabinet for many years.