Your answer is
C.) Enhanced Natural Beauty
If the question is asking whether it is true or false, the answer is true. It is because not all women who have menstruation has the exact time when it comes to predicting or determine ovulation as there are factors considered and interrupts with these process that made it complicated and hard to determine.
A. the cell theory stating that all living things are composed of cells.
Hope this helps!
-Payshence
The studying a system of word used things in a particular discipline called terminology