Which of the Following Explanations Does the Text Give for the Fact

Multiple Choice

Which of the following explanations does the text give for the fact that Catherine Genovese was killed while 38 neighbors observed and none of them helped?

A) Murders happen too often in urban centers like New York City, so residents of urban areas generally don't bother to help.
B) Each of the observers thought that someone else would help.
C) The observers were not aware of the social responsibility norm.
D) The observers were not motivated to help because it would not lead to the survival of their genes.