This is just a rough summary for the occurrence --- British solders on patrol in Boston felt threatened by an unruly mob and during the turmoil they fired their weapons and killed four people.
I can't see the options (did you provide any? Is this multiple choice?), but I would assume they could guess that the domestication of animals was employed in that society, or learn what the people ate.
They where hijabs and other racist people do not like that.
THE ANSWER IS C - "World War II: From Isolationism to Involvement"
( i already took the test )