"differs from major depressive disorder because persons diagnosed with Persistent Depressive Disorder (Dysthymia) have symptoms of depression that are"

1.  Dysthymic disorder

2.  Longer-lasting

Explanation:

Dysthymia otherwise known as Persistent depressive disorder is a form of mood disorder which is characterized with a low mood occurring for minimum of two years, in conjunction with at least two other symptoms of depression.

Hence, Dysthymic disorder differs from major depressive disorder because persons diagnosed with Persistent Depressive Disorder (Dysthymia) have symptoms of depression that are Longer-lasting

answer

the best answer is c