Read the selection and answer the question. Excerpt from "Homeless" by Anna Quindlen (1) People find it curious that those without homes would rather sleep sitting up on benches or huddled in doorways than go to shelters. (2) Certainly some prefer to do so because they are emotionally ill, because they have been locked in before and they are [darned] if they will be locked in again. (3) Others are afraid of the violence and trouble they may find there. (4) But some seem to want something that is not available in shelters, and they will not compromise, not for a cot, or oatmeal, or a shower with special soap that kills the bugs. (5) "One room," a woman with a baby who was sleeping on her sister's floor, once told me, "painted blue." (6) That was the crux of it; not size of location, but pride of ownership. (7) Painted blue. (8) Sometimes I think we would be better off if we forgot about the broad strokes and concentrated on the details. (9) Here is a woman without a bureau. (10) There is a man with no mirror, no wall to hang it on. (11) They are not homeless. (12) They are people who have no homes. (13) No drawer that holds the spoons. (14) No window to look out upon the world. Which of the following is the main idea of the selection? A Shelters do not help homeless people. B Homelessness is hard for people to understand. C Shelters should allow homeless people to paint the walls. D Homelessness cannot be fixed just by providing physical housing.