The correct answer to this question is C, 7.5. Piliavin study was done in 1969, over two months. The goal of the study was to gain information on the four factors that influence the behavior of a bystander. These factors include who the victim was, the race of the victim, the size of the group, and the impact of modeling.
The study was performed in New York City on the *th Avenue Express train. The results of the study were that white people were more helpful when a victim needed it. It also showed that if the victim was white, the received help faster than if they were black.