Which equation calculates the indirect fitness benefit of altruistic behaviour and kin selection?

Question

Quizplus · Accepted Answer

The equation B × r calculates the indirect fitness benefit of altruistic behavior and kin selection, where B is the benefit to the recipient and r is the coefficient of relatedness between the actor and the recipient. Choice A (C × r) is not a relevant equation in this context. Choice C (B ÷ r) is incorrect because dividing the benefit by relatedness does not result in the indirect fitness benefit. Similarly, choice D (B + r) is incorrect because simply adding relatedness to the benefit makes no sense in the context of calculating indirect fitness benefit.

Which Equation Calculates the Indirect Fitness Benefit of Altruistic Behaviour