Good walls make good neighbors is what Robert Frost said right? Well it could relate to the modern era because Trump says we must build the wall which I don't really think works. Anyways also Why, you reckon would relate to the American Modernist era would relate is no one can buy happiness with money and that relates with us right now Bloomberg tried to buy everyone's votes with half a billion dollars and failed so therefore you cannot buy happiness with money.
You didn't include the answer choices, but a question with the same wording popped up on the quiz I just took and the answer for me was B : They suspect something strange may be going on.