Pls help I don't understand

I think its C.

Explanation:

A is incorrect because it says sunspot increases with time and that' false, it's decreasing from 1650 - 1700.

B is incorrect because it says earth tempreature increases every year, as you can see sometimes it decreases

D is incorrect because it's not clear whether climate is changing every 5 years or not

depends where

on my head

yes

on my legs

yes

on my

arms

yesh

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;