On a night patrol with his platoon, Charles has been ordered to watch a house through night vision goggles and notify his commander when the front door opens. Suddenly his night vision goggles malfunction. Until he can figure out how to readjust them, he will see the door opening best if he
A. continues to look straight ahead at the door, focusing light on his foveas.
B. continues to look straight ahead at the door to use his scotopic vision.
C. focuses on a point to the left or right of the door in order to use his scotopic vision.
D. focuses on a point to the left or right of the door in order to use his photopic vision.
Answer: C
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