Final answer:
The underlying cause often reported in dissociative identity disorder is childhood trauma and abuse. So the correct answer is option (B).
Step-by-step explanation:
The underlying cause often reported in dissociative identity disorder is childhood trauma and abuse. Dissociative identity disorder, formerly known as multiple personality disorder, is a condition in which a person experiences two or more distinct identities or personality states. These identities may take control of the person's behavior and memory, often stemming from severe trauma or abuse experienced during childhood.
Dissociative identity disorder is not believed to be solely caused by genetic factors or chemical imbalances in the brain. However, it is important to note that certain genetic and neurobiological factors may contribute to an individual's vulnerability to the development of the disorder.
Furthermore, poor impulse control is not considered an underlying cause of dissociative identity disorder. Dissociative identity disorder is primarily associated with the experience of trauma and its subsequent effects on an individual's mental and emotional well-being.