Which of these revisions corrects the inappropriate shift in verb tense ?

11. why is it important to use positive language in business messages?

Which phrase best describes roosevelt’s explanation of the german japanese war

What is implied in this sentence from mark twain's "the £1,000,000 bank-note"? i was puzzled, and wanted to discuss the matter a little further, but they didn't; so i took my leave, feeling hurt and insulted to be made the butt of what was apparently some kind of a practical joke, and yet obliged to put up with it, not being in circumstances to resent affronts from rich and strong folk.