I will leave the answer is C. The person who wrote the paragraph used a personal example, but personal example did not help.
Answer:
This thought had sustained him throughout the years.
Answer:
That Britain created conflict so its protection seemed needed
D). statistics. this shows that you are up to date on facts, and can prove facts about the topic you are speaking about. facts and statistics are concrete evidence that emphasize your arguments and help make your tip cohesive.
plus it makes you come off as smarter and more credible.
-hope it helps