Answer:
B. A lack of light on the edge of the stage
Explanation:
The spotlight's job is to highlight the main idea of a performance. Peripheral means of to the side view. If you look straight ahead you have a range of about 180 degrees of peripheral vision. The edge of the stage would represent the peripheral vision if the spotlight was the direct view. In other words, the figure is in the darkness (1) because it is out of the direct view and (2) because it is off to the side. Hope this helps :}
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