The correct answer is: a) India’s freedom struggle.
The Jallianwala Bagh is a public garden in Amritsar, India, and the site of a massacre that took place on the orders of Acting Brigadier-General Reginald Dyer on 13 April 1919, during the British Raj. Indian nationalists, many of them unarmed, were protesting against the arrest of two local leaders when Dyer ordered his troops to fire on them without warning. The British government later exonerated Dyer of any wrongdoing, but the massacre remains a controversial event in Indian history.
The Jallianwala Bagh is now a memorial to the victims of the massacre. It is a popular tourist destination and a symbol of Indian nationalism.
Option b) is incorrect because the Partition of India took place in 1947, 28 years after the Jallianwala Bagh massacre.
Option c) is incorrect because the Sikh Empire was a Sikh political entity that ruled over the northwestern Indian subcontinent from 1799 to 1849. The Jallianwala Bagh massacre took place during the British Raj.
Option d) is incorrect because the Mughal Era was a period in Indian history that lasted from the 16th to the 18th centuries. The Jallianwala Bagh massacre took place in the 20th century.