I believe it is seminal fluid.
Hope this helps :)
I think c (it makes getting water easier and and quicker for the cactus
Sickle cell anemia is an inherited form of anemia — a condition in which there aren't enough healthy red blood cells to carry adequate oxygen throughout your body. ... These irregularly shaped cells can get stuck in small blood vessels, which can slow or block blood flow and oxygen to parts of the body
from google
