Karen claims that multiple "people" with different personalities live inside her body; they take over her experiences and express themselves at unexpected times. each of these personalities has a different voice, a different age, and a different set of interests. which disorder is karen most likely experiencing?

The answer is "Dissociative identity disorder".

Explanation:

Dissociative identity disorder refers to a condition when a person suffers from multiple personality disorder, which means that there are two identities which are living in a persons body and sometimes one personality dominates and take control over his body and sometimes other personality do this. As in the given scenario karen is experiencing Dissociative identity disorder, there are two identities living in her body.