The correct answer is General Reginald E. H. Dyer.

• General Reginald E. H. Dyer ordered the shooting of peaceful protesters in the Jalianwala Bagh Massacre of 1919.

• The Jallianwala Bagh massacre is also known as the Amritsar massacre.
• The government of India passed the Rowlatt Acts in early 1919 which essentially extended the repressive wartime measures.
• The acts were met by widespread anger and Dyer was given the task of restoring order.
• He had put a ban on public gathering.
• A crowd of at least 10,000 men, women, and children gathered in the Jallianwala Bagh to protest peacefully which only had one exit.
• General Dyer and his soldiers arrived and sealed off the exit and opened fire on protestors.

• Micheal O' Dwyer
  • He was Lt. governor of Punjab when Jallianwalah massacre took place.
  • He was assassinated by Udham Singh in 1940.
• Lord Chelmsford
  • ​He was viceroy of India from 1916 to 1921.
  • He is known for introduction of Montague-Chelmsford reforms of 1919, also known as Government of India Act,1919.