How Do Altruistic Behaviours Arise Through Natural Selection

Question

How do altruistic behaviours arise through natural selection?
A)By his/her actions, the altruist increases the likelihood that some of its genes will be passed on to the next generation.
B)The altruist is appreciated by other members of the population because their survivability has been enhanced by virtue of his/her risky behaviour.
C)Animals that perform altruistic acts are allowed by their population to breed more, thereby passing on their behaviour genes to future generations.
D)Altruistic behaviours lower stress in populations, which increases the survivability of all the members of the population.
E)All of the options are correct.

Accepted Answer

Altruistic behaviours arise through natural selection because by his/her actions, the altruist increases the likelihood that some of its genes will be passed on to the next generation. This results in the spread of the genes for altruistic behaviour over time, benefiting not only the individual but also the entire population.