Answer:
A) fail to notice the elderly woman's problem
Step-by-step explanation:
In sociology, the term diffusion of responsibility is a phenomenon where a person is less likely to help some other person when they are surrounded by others, usually this happens because the person assumes that the other people that are around would help the person in need or someone is already providing help.
In this example, Arlette in a shopping mall and she passes an older woman who is sitting on a bench, clutching her arm and moaning in pain. Since she is surrounded by other people in the mall, she will most likely assume that other person will help or even will fail to notice the elderly woman's problem.