The group in a experiment that is not exposed to the tested variable is called the group?

Imma go with control group?

Control group

Explanation:

Control group is the group in the experiment which is treated as a benchmark or standard in the experiment for the comparison with the experimental variable. It enhances the accuracy of the experiment. This group does not receive any experimental treatment that is this group is not exposed to the tested variable .  

"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."