Which of the Following Study Results Would Provide the Best

Which of the following study results would provide the best support for evolutionary theories of altruism?

A) Ground squirrels are equally likely to help sibling squirrels as they are to help non-kin squirrels.
B) Parents tend to behave more altruistically toward healthy offspring than toward sick offspring.
C) Strangers are more likely to help a post-menopausal woman than a pre-menopausal woman.
D) People will help a total stranger if they feel distress and do not have an easy escape from the situation.