The Bystander Effect Is the Finding That ​

Multiple Choice

The bystander effect is the finding that ​

A) the probability that a witness to an emergency will help increases as the number of bystanders increases.
B) a group of witnesses to an emergency will all tend to cooperate to provide help.
C) people are less likely to provide help when they are in groups than when they are alone.
D) bystanders' willingness to help depends on the seriousness of the emergency.