The answer is evolutionary!
I hope I was able to help. :)
Answer:
B, Acting out (if this is wrong sorry)
Explanation:
The internet is never a good source for information, you should checkout your physician, a news article or even a pamphlet that you can acquire at your local hospital or doctors office! Maybe even checkout health seminars that are local, and possibly a book though they are often updated frequently so the information is liable to change at any point!