Question: Robert has only has power downstairs. In order to move the light from downstairs to his upstairs bedroom, he can
Choices:
text: Just stay in the downstairs rooms
label: A
text: set up an array of drinking glasses
label: B
text: set up an array of mirrors
label: C
text: Unscrew a light bulb downstairs and move it upstairs
label: D
Answer: C
Fact: a mirror reflects light