A US study has found that divorce does not typically make adults happier than staying in an unhappy marriage. The researchers tracked and interviewed, for forty-five years, 1594 unhappily married couples, of whom about 70 percent divorced midway through the study. The unhappily married adults who divorced and remained so for the rest of the period of the study stated that they were more depressed, on average than when they were unhappily married. This was true even after controlling for race, age, gender, and income. Therefore, unhappily married couples are better off staying in an unhappy marriage than getting divorced.
Which of the following, if true, most seriously weakens the author’s conclusion?
(A) The couples who continued to stay in an unhappy marriage did so primarily due to marriage-counseling experts' help.
(B) Most of the couples in an unhappy marriage had, on occasion, extended periods of marital unhappiness that were worse than such episodes in the lives of those who were divorced.
(C) The loneliness divorced adults experience exaggerates in their minds the emotional stress of a bad marriage.
(D) An adult who divorced a spouse of bad marriage, when he or she remarried, found a more significant and lasting happiness than when that adult had been divorced.
(E) Lonely divorcees tend to have a significantly more exaggerated view of their current episodes of depression than of the episodes when they were in the marriage.