The correct answer is option 2 i.e.Jallianwala Bagh Massacre.
Jallianwala Bagh Massacre was a major incident to happen in India in the year 1919
The Jallianwala Bagh massacre is also known as the Amritsar massacre which took place on 13 April 1919
The Rowlatt Act was passed on 10 March 1919 and was met by widespread anger and discontent among Indians that led to a one-day general strike(Rowlatt Satyagraha) throughout the country.
The Non-cooperation movement was launched in 1920by Mahatma Gandhi.
Salt March or Dandi March was a 24-day non-violent march led by Mahatma Gandhi was started on 12 March 1930.
The Swadeshi Movement was officially proclaimed on August 7, 1905
The Swadeshi movement started with the partition of Bengal.
The partition of Bengal was done by the Viceroy of India, Lord Curzon in 1905.