Answer: This can be explained as DIFFUSION OF RESPONSIBILITY.
Explanation: Diffusion of responsibility can be defined as the study of how people's thoughts, feelings, and behaviors are influenced by the actual, imagined or implied presence of others. Here individuals are less likely to take responsibility for action or inaction when others are present.
Diffusion of responsibility can be illustrated in this question where bystanders fail to give victims of automobile accidents needed assistance due to the actual, imagined or implied presence of others.