A Persistent Vegetative State is described as which of the following?

• A. No brain activity at all
• B. Brainstem functioning with no cortical activity
• C. Short-term coma with recovery possible
• D. Full consciousness with reduced responsiveness

Answer: (B)

Wakefulness without awareness is the key idea here. In a persistent vegetative state, the brainstem circuits that control arousal remain active, so the person can seem awake—eyes open, sometimes reflexive movements or spontaneous vocalizations and sleep–wake cycles—yet there is little to no conscious experience because the cerebral cortex isn’t supporting conscious processing.

That combination—arousal without awareness—is what makes the statement describing brainstem functioning with no cortical activity the best fit. It captures why someone in a PVS can look awake but not be aware.

Other descriptions don’t match: no brain activity at all would imply brain death; a short-term coma with possible recovery suggests a reversible loss of consciousness with more intact cortical function; full consciousness with reduced responsiveness would mean the person is conscious and aware, which contradicts the persistent vegetative state.