Answer:
the bystander effect
Step-by-step explanation:
Suppose you are walking down a street. A woman has fallen down, but because there are so many people around it does not occur to you that you should help. You just assume someone else is about to help her and keep walking. This is an example of the bystander effect or bystander apathy. When other people are present it is not probably that one passer-by would help. The more people present the less someone who passes would help. There is a diffusion of responsibility. No one feels responsible for action or inaction when there are many people present.