Switch . . . . . . . . a light. It’s getting dark. A. on B. out C. of D. off

The correct answer is D. Switch off a light. It’s getting dark.

The other options are incorrect because:

• Option A, switch on a light, is incorrect because it is getting dark, so we want to turn off the light, not on.
• Option B, switch out a light, is incorrect because it is not clear what “switch out” means in this context.
• Option C, switch of a light, is incorrect because it is a typo.

The sentence “Switch off a light.

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