The symptoms of , a mild form of bipolar disorder, continue for two or more years, interrupted occasionally by normal moods that may last for only days or weeks.

Cyclothymic Disorder

Explanation:

Cyclothymic disorder is a rare type of mood disorder whose symptoms resemble that of bipolar disorder. Although, the symptoms are manifested in a milder manner when compared with those of bipolar disorder.

The mood shifts in cyclothymic disorder are not as extreme as with Bipolar disorder.

The normal moods in cyclothymic disorder can last for a longer time than in bipolar disorder.

Although, the mood swings in cyclothymic disorder are more frequent than in bipolar disorder.

The true causes of cyclothymic disorder are not specifically known but bipolar disorder & cyclothymic can both occur in the same family suggesting that they may share similar causes.

the answer is c

tell me if wrong