According to the u-shaped curve of marital satisfaction:
a. marriage has curves and waves.
b. marital happiness goes up and down in a curve.
c. marriages depend on you.
d. after the honeymoon, marital happiness steadily decreases, but then rises again at the empty nest stage.

D.

Explanation:

According to U-Shaped curve of marital satisfaction, the satisfaction in marriage is on high during the honeymoon period of marriage and then the satisfaction drops afterwards but also rises plausibly after post-parental years.

Glen in 1998, proposed this theory of U-Shaped curve marital satisfaction.

So, the correct option according to the definition stated in D.

answer; shays rebellion;

answer; genetics;