posted by khan .
Which of the following would you use to sort through slides for a slide presentation?
B. Opaque Projector
C. Copy machine
D. Light box
I suggest you review the previous "Related Questions" answers below, and use your powers of reasoning.
A light box is a box with a white translucent window on one side and a light bulb inside.
An opaque projector projects images of opaque objects on a screen.
You must know what cameras and copiers are.
I assume you know what slides are, although slide film isn't used much anymore.