After the discussion, what does the author of "On Writing Well" feel the students have learned about writing?

That writing well is something only a few people can do correctly.

The answer Is A. by pausing for thought and asking for clarification.
Answer:
Natural resources are becoming extinct because of repeated use and misuse.
So, be very wise as you use them.
Do not misuse as well as waste any natural resource.
If possible try to recycle every possible resource that can be used again.
This will save and give earth another chance to flourish as it was in the earleir days.