Boiling affects enzyme-controlled reactions by
a. decreasing the energy of activation.
b. increasing the rate of reaction.
c. increasing the energy of activation.
d. denaturing the enzyme.

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 : )

the correct answer is d