Answer:
The best answer would be D - comic :: entertaining
Step-by-step explanation:
Didactic means the action of teaching you something, or being educational. So, the analogy of textbook :: didactic means that a textbook is meant for educating. The next analogy to look for should also be comparing an object to what it's meant for. So...
✖️ Newspaper :: current doesn't mean that a newspaper is meant for anything - it's just saying that it's current.
✖️ Novel :: chapters means that a novel contains chapters, but it doesn't give you the purpose of a novel.
✖️ Lecture :: college means that a lecture is something found in a college. However, the purpose of a lecture is not college.
✔️ Comic :: entertaining is the correct answer!! It shows that the purpose of a comic is to entertain, as the purpose of a textbook is to educate.
✖️ Magazine :: gossip shows that magazines provide you with gossip, but their purpose is not to gossip.
I hope this helps you! Have a good one :)