Their are 50 words: a, am, and, anywhere, are, be, boat, box, car, could, dark, do, eat, eggs, fox, goat, good, green, ham, here, house, I, if, in, let, like, may, me, mouse, not, on, or, rain, Sam, say, see, so, thank, that, the, them, there, they, train, tree, try, will, with, would, you.
My answer would be '<span>Why are physical fitness programs necessary for improving student health?' Because in the article it discusses a 'room for improvement' when talking about how many children are doing the 'quota' of </span>exercise.