Depersonalization is best characterized by?

Depersonalization is best characterized by the sensation of feeling detached from one's own body or self. This experience can involve a sense of disconnection from one's thoughts, feelings, and physical sensations, often leading individuals to feel as if they are observing themselves from outside their bodies. This phenomenon is commonly associated with anxiety, trauma, and stress disorders.

The other choices do not capture the essence of depersonalization. The inability to form any memories is more aligned with amnesia rather than depersonalization, which does not inherently involve memory formation issues. Multiple distinct identities pertain to dissociative identity disorder, distinguishing it from depersonalization where a single identity is retained. A total loss of personal history relates more to dissociative amnesia, highlighting a disconnect with one's past experiences rather than the current experience of self. Therefore, the correct characterization of depersonalization focuses specifically on the feelings of detachment from one’s body, making this the appropriate answer.