B. Main idea. Hope it helps
i am interested at flying kites
I'm sorry this answer is sort of late, but the answer would be A, "describing objects that are important to the character." I'm sorry if it's wrong, but it seems best to me!
Hope this helped and good luck!
The correct answer seems to be the first of the four. All other statements do not seem relevant, as nowhere in the passage is a description of foreign occupation, foreign affairs, or military needs. For the first, the "if" serves to say that the opportunity is still possible, so this gives hope, but the "if" can only be achieved by having all "the peace-loving nations" work together to protect peace. Thus, people must "act to secure a more certain future."