Answer:
Option (c).
Explanation:
The kin selection was first used by the Hamilton's and explains how this selection increases the frequency among the recipient and the actor and also explain the genetic relatedness among the family members.
The Hamilton's rule depends on the genetic relatedness r and the benefits obtained by the action to the recipient and the energy or cost used during the action. The selection is positive if the product of genetic relatedness and benefits is more than the cost.
Thus, the correct answer is option (c).