Final answer:
The state in which someone feels detached from their own identity is termed Depersonalization (option B), not to be confused with dissociation, anxiety, or bipolar disorder.
Step-by-step explanation:
The term that describes the state when an individual feels disconnected from their own identity is B) Depersonalization. Depersonalization is a sense of detachment from oneself and one's identity or body, often described as feeling like an observer of one's own life. It is one of the features of a larger disorder known as depersonalization/derealization disorder, as outlined on page 575. Individuals with this condition may feel as if they are going through the motions in a dream-like state, and they may struggle to connect with their thoughts, feelings, or memories. In contrast, other terms listed, such as dissociation, anxiety, and bipolar disorder, describe different psychological phenomena or disorders.