Mr. hughes heard what sounded like cries for from a swimmer located 30 yards from the ocean shoreline. he continued walking along the beach, however, because he figured that one of the many swimmers in the vicinity would provide if it was needed. his reaction best illustrates the dynamics involved in?

the bystander effect.

Explanation:

Hello! It is a phenomenon in which, when an emergency happens, there is a greater chance that no one will do anything if there is already a large audience in the place, as is the case of Mr. Hughes. As a spectator, he thinks that other people will intervene, perhaps more skilled than him, and will be more effective

i got 3,4 and 5 as an answer

answer; marvin gaye;