Which of the following statements describes an example of natural selection?

Answer;

An aloe vera plant possessing a trait for extra thick leaves survives a long drought in a desert, while an aloe vera plant that has thinner leaves does not.

Explanation;Natural selection occurs when organisms with traits that are well-suited to an environment tend to survive and reproduce at a greater rate than organisms that are less suited to an environment. In this case, the trait for extra thick leaves in aloe vera plant is well suited to the environment of a desert. Therefore, those aloe vera plants with this trait will tend to be more adaptable to the desert environment and survive a long drought in a desert, while those plant without this trait will die as they are not adaptable to the environment.