A blind spot specially in a form of writing able to let the reader give a negative effect to the topic or simply saying its the weak or the questionable point of a paragraph. So in the choices the best answer would be B."Yes, space programs are expensive, but the money we spend on these programs will help decide out future"
The friend and the boss would be the minor characters. I say this because we do not know as much about them as we do about Ms. Slade, even though we do not know much about her either.
