Answer:
Bystander effect
Explanation:
The bystander effect is a claim that people are less likely to help if there is a large group of people around.
Kitty Genovese was murdered by Winston Moseley on the thirteenth of March 1964. She cried out for help when she was being attacked nobody directly helped her. The reason for this was people thinking that someone else will help her.
Hence, the question is referring to the bystander effect.
