In Explaining the Process by Which Kin Selection Works to Encourage

In explaining the process by which kin selection works to encourage altruism, evolutionary psychologists would argue that

A) helpers consciously consider "biological importance" before helping.
B) norms have arisen to replace ingrained human behavior.
C) over millennia, the genes of those who follow the "biological importance" rule will survive.
D) the "biological importance" rule is used only in life-and-death situations.