You are talking with a friend in a closed room that has no windows, no objects, and no furniture. The only thing in the room is an overhead incandescent light that is turned on. You are looking at your friend and begin thinking about whether you are seeing your friend as a result of reflection. Does reflection play a role in seeing your friend?

a) No, the room is just illuminated by the overhead light.
b) No, visible light is emitted by my friend and enters my eye.
c) Yes, the visible light from the overhead light bulb is specularly reflected from my friend and enters my eye.
d) Yes, the visible light from the overhead light bulb is diffusely reflected from my friend and enters my eye.