The gymnosperms are all the plants that don't protect their seed with any fruit. Comparately, the angyosperms (or angio-, whatever, I'm not English) always have some kind of fruit, even if not eidable!
I believe its D I hope it helps
The answer is, d. consists of circular DNA molecule . The circular DNA is found in bacterias and archeas (which are prokaryotic organisms). The picture shows bacterial chromosome.