Which of the following is most likely to improve the fitness of a population to its environment?

a. genetic drift

b. mutation

c. natural selection

d. gene flow

e none of the above will improve fitness.

The correct answer is C: natural selection

explanation:

According to the evolutionary mechanism, natural selection is a process by which the population of a species becomes adapted to its natural environmental conditions and reproduces in a most successful way.

If this process of natural selection continues generation after generation, then these traits will become more common and obvious in the upcoming population.

The population of species will adjust in a better way to the environment along with evolving and adapting themselves to favorable conditions.