Answer:
A sentence that gets right to the point
Explanation:
It's doesn't use figurative language, it's not a quote from a speech, and most people know about Pearl Harbor.
I believe that it is "C. Minor supporting detail" But I still have some doubts, so it may be "B. Major supporting detail"
Answer: I believe it would be definition 1
I apologize in advance if it’s wrong I can’t see the text clearly, but I hope it helps to some extent!