In order to perceive your friend walking towards you, what are you sensing?

Name: In order to perceive your friend walking towards you, what are you sensing?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

In order to perceive your friend walking towards you, you are sensing light waves reflecting off their body and into your eyes.

Answer: C
 As your friend walks towards you, they are creating disturbance in the air molecules which your body is experiencing as sound waves.

In Order to Perceive Your Friend Walking Towards You, What