Events that damage the cell's regulatory apparatus can cause the uncontrolled division of cells called a) cancer. b) hyperplasia. c) mutation. d) phosphorylation.

Option A, cancer

Explanation:

In cancer, cells with in an organism start dividing and there is no mechanism to stop their division thus an unstoppable cell division takes place in cancer.  

All the cells with in the body have a certain life period and at later stage of its life it gets instruction to die and stop dividing/reproducing. But in case of a cell affected by cancer, this regulatory mechanism fails and thus the cell enters into a phase of unrestricted cell division.  

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )