Answer:
B. groan and move her eyes
Step-by-step explanation:
Based on the information provided within the question it can be said that if only the brainstem was left functioning then Terri would still be able to groan and move her eyes. This is because the brainstem alone is responsible for many functions relating to attention, vision, sleep, hearing, arousal, and temperature control. Therefore without help from other areas of the brain, the brainstem can countrol eye movement and groan, mainly because it does not require motor movements.