How is catatonic stupor related to loss of volition?

A) Both appear to be behaviorally similar, but each has different underlying features.
B) Both are negative symptoms of schizophrenia.
C) Both rely on similar structures in the motor cortex.
D) Both of these appear at similar points during the time-course of schizophrenia.

Catatonic stupor and loss of volition (a lack of motivation or drive to perform activities) may appear behaviorally similar because both can result in a lack of movement or apparent engagement with the environment. However, they have different underlying features. Catatonic stupor is a specific symptom that can occur in schizophrenia and other disorders, characterized by a person's inability to move or respond to the environment, often due to extreme motor immobility or negativism. Loss of volition, on the other hand, refers more broadly to a decrease in the motivation to initiate and perform self-directed purposeful activities, and is considered a negative symptom of schizophrenia, reflecting a deficit or loss of normal functions.