Answer:
The paper is Black.
Step-by-step explanation:
White light shines on a piece of paper whose atoms are capable of absorbing orange, indigo, violet, yellow, red, blue, and green. Since these are all the colors of ROYGBIV, all colors would be absorbed. This would make the paper black.
If you came here from Odessey ware, the question might be "White light shines on a piece of paper whose atoms are capable of absorbing orange, indigo, violet, yellow, red, and blue light. What color is the paper?". The difference between the two questions is that on this question, the atoms are not capable of absorbing green.
The answer would be Green. This is because all of the colors of ROYGBIV except green would be absorbed. This means that green would reflect more than the other colors.