What natural resource is renewable

Renewable natural resource:

The natural resources are those resources that are available in nature and can be used up for economic gains and needs. The natural resource that can be recycled or replaced naturally and used repeatedly is renewable resource. Some of the natural resources that are renewable are as follows,

i believe the answer is c

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."