Answer.its C babe
Bc if you think back at the question it’s most likely for the mask to prevent coughs ect.
B. The softening of the uterus near the cervix
Most likely to leave the dinner table early.
-OR-
Never be eating. And going to the bathroom often.
I think (C):600
Explained: other sources say there is about 650 but if you count the muscles within a complex muscle then about 840