Answer:
The correct answer is C: natural selection
Step-by-step 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.