Jim dives into the water to his drowning sister; ivan dives into the water to a total stranger because he wanted to impress his new girlfriend and is a trained lifeguard. jim's motive to is best explained by while ivan's motive to is best explained by

Jim's motive to help is best explained by "evolutionary theory", while Ivan's motive to help is best explained by "social exchange theory."

Explanation:

Jim's motive is explained by evolutionary theory, as he is going to help his sister. his emotions and behavior is due to the theory of evolution. Where Ivan jumps into the water just because he want to impress his girlfriend, his social behavior is a result of exchange process. He may be thinking that if he help jim's sister his girlfriend thinks good about him.

answer; (d) none of the above;

using the scientific method.