During the luteal phase a low level of progesterone and estrogen will bring about
A. a spike of the luteinizing hormone causing the oocyte to be ovulated.
B. the enlarging of the breast tissue in order to prepare for lactation.
C. the development of a secondary oocyte.
D. the disintegration of the endometrium and the rupturing of the blood vessels.
E. the thickening of the endometrial lining in preparation for the implantation of a zygote.
Answer: D
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