Choose what colors are absorbed when white light hits a red apple. (pick all that apply.)

red
orange
yellow
green
blue
violet
black
white
none

The colors absorbed by the red apple are as follows: Orange, Yellow, Green, Blue, Violet.

Different substances or pigments absorb and transmit/reflect light at different wavelengths. The range of wavelength at which a substance absorbs or reflects light determines its color. White light, which comprises of Red, Orange, Yellow, Green, Blue, Indigo and Violet (ROYGBIV) passes through an object. The object absorbs some light and reflect others, the color reflected determines the color of that object.A red apple, however, appears red because it absorbs all other colors of white light except red. Therefore, the colors absorbed by the red apple are as follows: Orange, Yellow, Green, Blue, Violet.

Learn more: link

A red apple absorbs all colors of visible light except red, so red light
is the only light left to bounce off of the apple toward our eyes. 
(This is a big part of the reason that we call it a "red" apple.)

Here's how the various items on the list make out when they hit the apple:

Red . . . . . reflected
Orange . . absorbed
Yellow . . . absorbed
Green . . . absorbed
Blue . . . . absorbed
Violet . . . absorbed
Black . . . no light; not a color
White . . . has all colors in it

A. to determine if humans can explore mars safely