Hal and Darcy Endured Many Stressful Years, but Over Time

Hal and Darcy endured many stressful years, but over time, their marriage rebounded and improved. Research indicates that:

A) once both spouses realize they would be alone without each other, marriages improve.
B) stress may motivate couples to work together.
C) divorce is probably unavoidable for them in the future.
D) learning to understand and forgive each other promotes happiness.