A mood disorder is characterized by an inability to recall important information, usually traumatic or stressful in nature, that is too extensive to be normal forgetfulness.

The description—being unable to recall important personal information, often related to trauma or stress—is the definition of dissociative amnesia. Dissociative amnesia is a dissociative disorder, not a mood disorder, so the statement is false. The choice representing false is B.

AI-written and checked against the verified answer.