Research on Marriage in the United States Has Shown That

Research on marriage in the United States has shown that by midlife

A) most marriage partners have less time to spend as a couple than they did earlier in their marriage because of increased job demands.
B) the correlation between marriage and mental health is weaker than it was earlier in the life span.
C) nearly three-fourths of adults describe their marriage as "excellent" or "very good."
D) marital satisfaction stays relatively low until the early seventies when most people are retired.