Final answer:
Neurological conditions is NOT an acceptable synonym for psychological disorders.
Step-by-step explanation:
The term that is NOT an acceptable synonym for psychological disorders is b. Neurological conditions. While psychological disorders and neurological conditions can both affect the brain and mental processes, they are not synonymous. Psychological disorders refer to conditions that primarily affect a person's thoughts, emotions, and behaviors, while neurological conditions refer to disorders that primarily affect the structure or function of the brain and nervous system.