Aconfined aquifer is found in the unsaturated zone found between two impermeable layers the top layer of the saturated zone separated from the main groundwater

Option B, found between two impermeable layers

Explanation:

A confined aquifer is one that is covered on both the sides by rocky structures which are non-permeable or it can be a water bearing stratum covered by a rock strata. Since it is covered on both sides, the water contained in it exists under pressure. Therefore, when a well is dug into it, the water rises due to pressure force.

Hence, option B is correct.

"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."

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project