According to this, the answer is A.
Answer: It should be C
Explanation:
A does not make sense when it comes to anything hitting earth.
B does not make sense either because nothing ever stripped the atmosphere.
C makes a lot of sense because rain tends to wash things away.
D is like the same as A
In this case the proportional would be 63 because you multiply 14 by 99 and then divide the answer you get by 22 and that ends up being 63. Hope this helps!