Answer:
C: British soldiers fired on and killed Catholic demonstrators.
Step-by-step explanation:
The photo being used is shown below. Due to the sign referencing "Bloody Sunday" then it can be concluded that the answer is C. Bloody Sunday, or the Bogside Massacre was a massacre on 30 January 1972 in the Bogside area of Derry, Northern Ireland, when British soldiers shot 26 civilians during a protest march against internment without trial. If you have any questions please comment below. E2021, have a great day.