What are the strengths and limitations of this model ?

i dont think there is any

Explanation:

 the only might be that it not physical model

i think the answer is b.

hope it

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.