If this is fill in the blank:
I have never “been to” Japan
It seems like a cool place! :)
Answer:
C
Explanation:
It is C because the paragraph does show off the main points of what the article will be about.
The clause <em>when we can rest </em>is a subordinate/dependent clause, meaning that it cannot stand on its own - it has to be a part of a larger, independent clause, as is the case here.