PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!

Answer:
I think the answer is B.
Explanation:
I think this because they have these variations to better adapt to conditions in their environments.
Answer:
D) An arctic fox changes its colour over time because it migrates to an area with a different climate.
Explanation:
The genetics of the aninal have changed due to a change in environment.