A. 13 April, 1919
B. 19 May, 1918
C. 23 April, 1917
D. 21 June, 1916
🧠 Explanation:
The Jallianwala Bagh incident occurred on April 13, 1919, when British troops fired on unarmed Indian civilians. For history students, this massacre highlights colonial oppression, making it a key topic for studying India’s independence movement and British colonialism.