Sally Is Walking Down the Street When She Comes Upon

Multiple Choice

Sally is walking down the street when she comes upon a man who appears to be having a seizure. Approximately 15 other people stop as well and all appear genuinely concerned about the man's health and well-being. However, nobody calls for help because, like Sally, they all assume that someone else has already made a call to the paramedics. In this instance, the lack of help appears to be the product of:

A) diffusion of responsibility.
B) social comparison.
C) the fundamental attribution error.
D) both diffusion of responsibility and social comparison.