Everyone experiences a wide range of emotions, but when could they indicate a mental disorder?

It would indicate a mental disorder when the mood changes dratically at an alarming rate.

Explanation:

the correct answer is d

out of the choices i'd say d the ability to set goals, mainly because to desire to continue you need motivation but it isn't motivation in that part, but setting goals means you have an endgame and you want to reach it which sums up motivation.