Observed under magenta colored lights, you see a crayon that appears red. What colors could the crayon be when observed under ordinary white lights?

_____cyan
____magenta
____green
____yellow
____red
___black
___white
____blue

To determine what colors the crayon could be when observed under ordinary white lights, let's analyze the given information.

It is stated that the crayon appears red when observed under magenta-colored lights. Magenta is a purplish-red color that is created by combining blue and red light.

When white light is shone on an object, it contains all the colors of the visible spectrum. However, objects absorb some colors and reflect others, which determine the color we perceive.

Since the crayon appears red under magenta-colored lights, it means that the crayon reflects red light and absorbs other colors. Therefore, when observed under ordinary white lights, the crayon should still reflect red light and appear red.

So, the correct answer is:
____red