15. According to Hamilton's rule, the natural selection favors altruism when rB>C, where ris
coefficient of relatedness (fraction of genes shared), B is benefit, the average number of extra
offspring that the recipient of an altruistic act produces, and C is cost, how many fewer offspring
the altruist produces. Let's say that members of species X produce 4 offspring on average.
Individual A of species X is in a perilous situation that will result in its death if the individual A
does not get help. First cousin of individual A decides to risk its own life in order to save
Individual A. what would be maximum risk of death for the cousin, in order for altruistic act to
be favored by natural selection?
A) 6 2596
B) 12.5%
C) 25%
D)50.

Hamilton's rule, mathematical formula that supports the notion that natural selection favors genetic success, not reproductive success per sea. But by the recipient of the altruism, ℂ is the cost (in number of offspring equivalents) suffered. The altruistic behaviour, and r is the genetic relatedness of the altruist to the beneficiary.

Explanation:

I am not fursure on what your answer would be but I hope that what I put can help you find your answer.