A key point in Darwin’s explanation of evolution is that Group of answer choices1. the biological structures most likely inherited are those that have become better suited to the environment through constant use. 2. mutations that occur are those that will help future generations fit into their environments. 3. 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. 4. genes change in order to help organisms cope with problems encountered within their environments.