After the first ten years most married couples find: a. there are more fights over equity in domestic work. b. job demands increase so less time is spent in shared activities. c. financial problems are overwhelming. d. tension decreases as children become more independent.

D). Tension decreases as children become more independent.

Explanation:

As per the question, the tension seems to decrease among most of the married couples after ten years of married life and the key reason is that the children become more independent and self-sufficient. This helps in reducing the tension and stress of responsibilities for both the partners which further assists in lowering the chances of divorce and separation of them. As the children grow and begin to display a self-reliant behavior, the parents start to elevate themselves from their responsibilities and give time and efforts to their personal problems. Thus, option D is the correct answer.