An adaptation is
a. a trait that gives rise to a new speciesb. the cause of natural selectionc. an individual's attempt to conform to its environmentd. a trait that gives an organism a reproductive advantage in the current environmente. all of the above

Option D

Adaptation is a trait that gives an organisms a reproductive advantage in the current environment.

Explanation:

Adaption or adaptive trait is a trait posses by an organism that play a functional role in its current environment as a result of natural selection. These traits help organisms to meet their basic needs and survive in their environment. Organisms body part undergoes changes like coloring, physical appearance and many more make organisms to have reproductive advantages.

colors do exist. the color of the sky is actually violet; humans percieve the color of the sky as blue.