A Man in a Wheelchair Is Waiting at a Subway

Multiple Choice

A man in a wheelchair is waiting at a subway station with several other people,when he gets swarmed by a group of unruly teens-they poke fun at him and race him up and down the station platform in his chair.Why do the witnesses do nothing?

A) The more bystanders there are,the less responsibility each person feels to intervene.
B) People might have assumed the victim was acquainted with his assailants.
C) People do not like to interfere in other people's business.
D) Everyone is too frightened to intervene;they all fear for their own safety.