A key point in Darwin's explanation of evolution is that
a. the biological structures most likely to be inherited are those that have become best suited to the environment through constant use.
b. all mutations that occur are those that will help future generations better fit into their environments.
c. any trait that confers even a small increase in the probability that its possessor will survive and reproduce will be strongly favored and will spread through the population.
d. genes change in order to help organisms cope with problems encountered within their environments.
e. extinction is nature's way of weeding out undeserving organisms.
Answer: C