I'm pretty sure it would be D, since
Answer:
In the chloroplast.
Explanation:
Chlorophyll is a green pigment plants use to absorb light so they can make food via photosynthesis. Chloroplasts are organelles that contain chlorophyll, so it only makes sense that the best answer is the chloroplast.
I would go with A Freudian Slip ... Hope it helps. :)
Prokaryotic cells are the ones you mentioned