As Karen Goes Through a Difficult Family Problem, She Maintains

As Karen goes through a difficult family problem, she maintains a cheerful attitude most of the time. Which of the following is likely to be a consequence of Karen's emotional state according to the broaden-and-build theory?

A) It will be easier for her to walk away from the problem if necessary.
B) She will be better able to solve problems as they arise.
C) She is prevented from properly dealing with the stress.
D) It will be more difficult for her to cope if the outcome is negative.