Sometimes Parents Will Sacrifice Their Own Lives in Order to Ensure

Sometimes parents will sacrifice their own lives in order to ensure the survival of their children.An individual who associates with the sociobiological view would argue that these instances:

A) are due to innate altruistic drives within every human being.
B) occur because genetic survival is more important than individual survival.
C) are due to the conflict between unconscious psychological forces and psychological defences.
D) occur because of the reinforcement of altruistic behaviour by culture and society.