Read the following passage and questions, then choose the right answer from options, the answer should be one of A, B, C, D.

<passage>:
that had meant so much to him when he was tied to his wheelchair and For instance, a scrubby little terrier followed him home from Twin Palms one day and Ethel let him keep it. He fed the pup and washed it going to Michigan to find Charlie. It was only natural, of course, because kids—normal kids—forget their pain quickly. It's a sort of Joey—but between them they changed the face of the universe When school opened again in the fall Ethel sold her trailer and got a ... perhaps. When they were gone the Twin Palms trailer court was so lonesome and that separated his mother's trailer from the one Doc Shull and I lived country for the sugar cane season. We never heard from Ethel and Joey defense mechanism, Doc says, against the disappointments of this life. the Twin Palms trailer court and the palmetto flats to the Tampa staring upward with such absorbed intensity that he didn't even know I was there until I spoke. "Anything wrong, Joey?" I asked. Doc says that footloose migratories like him and me forget old associations as quick as kids do—and for the same good reason—so I'm not especially interested now in where Ethel and Joey Pond are or how they're doing. But there's one thing I'll always wonder about, now that there's no way of ever knowing for sure. I wish I'd asked Joey or Ethel, before they moved away, how Charlie couldn't help wondering why he'd turned to watching the sky instead. "What're you looking for up there, Joey?" I asked. He didn't move and from the tone of his voice I got the impression I remembered why the kid wasn't watching the palmetto flats. But I I gave it up and went on to my own trailer without asking any more lost that other eye. that he only half heard me. parked our trailer at the Twin Palms court. I'd nearly stumbled over trailer I shared with Doc Shull and left the two of them waiting for Our trailer was dark inside, which meant first that Doc had probably saw Doc asleep in his bunk. staying long at the Twin Palms trailer court. It wasn't a very around the trailer playing cribbage and drinking beer with Doc Shull. looking its screwball funniest with our arguments one or the other of us would look out the window and see Joey Pond in his wheelchair, waiting for a one-eyed dog named Charlie to come trotting home across the palmetto flats. He was always there, day or night, until his company he felt secure, and he was independent of the kids who could point in living." I could see it when Doc put it that way. The dog had spent more time with Joey than Ethel had, and the kid felt as safe with him as he'd have been with a platoon of Marines. And Charlie, being a one-man dog, had depended on Joey for the affection he wouldn't take from anybody else. The dog needed Joey and Joey needed him. Together, they'd been a natural. At first I thought it was funny that Joey never complained or cried when Charlie didn't come home, but Doc explained that it was all a part of this psychological block business. If Joey cried he'd be admitting that Charlie was lost. So he waited and watched, secure in his belief that Charlie would return. The Ponds got used to Doc and me being around, but they never got what you'd call intimate. Joey would laugh at some of the droll things Doc said, but his eyes always went back to the palmetto flats and the highway, looking for Charlie. And he never let anything interfere with point to ride back by way of the Pond trailer and Joey would stop him and ask if he's seen anything of a one-eyed dog on his route that day. Then he'd say, "Not today, Joey," or, "Thought so yesterday, but this fellow had two eyes on him. 'Twasn't Charlie." Charlie had come home and was scratching at the trailer ramp to be let A little later Ethel came out into the moonlight and shut the trailer Doc and I looked at each other in the half-dark of our own trailer. I knew what he meant and wished I didn't. Ethel had finally told the kid that Charlie wasn't coming back, not ever. That's why I was worried about Joey when I came home the next evening and found him watching the sky instead of the palmetto flats. It meant he'd given up waiting for Charlie. And the quiet way the kid spoke of was when he ripped the paper off his package, though, that I thought he'd lost his mind. "Books for Joey," Doc said. "Ethel and I agreed this morning that the boy needs another interest to occupy his time now, and since he can't go to school I'm going to teach him here." Diner, that a tourist car with Michigan license plates had picked Charlie up on the highway and taken him away. It was a good enough story. Joey still didn't know that Charlie was dead, but his waiting was over because no dog could be expected to find his way home from Michigan. "We've got to give the boy another interest," Doc said, putting away the books and puncturing another beer can. "Joey has a remarkable talent for concentration—most handicapped children have—that could ?" Doc said when I told him. "Good Lord, Roy—" beer with us and talked to Doc about his plan for educating Joey at home. But she couldn't tell us anything more about the kid's new fixation than we already knew. When she asked him why he stared up at neither of us got to sleep right away. "Maybe we ought to look for another interest in life ourselves instead of drumming up one for Joey," Doc said. He meant it as a joke but it had a shaky sound "Something besides getting beered up every night, Doc laughed at that, sounding more like his old self. "No, Roy. No two people ever had instantaneous and identical hallucinations." "Look," I said. "I know this sounds crazy but maybe Joey—" suggested to Doc, only half joking, that maybe the Pup had stayed put because it wasn't bright enough to suit Joey's taste, but Doc called I trailed along, but we didn't get farther than Joey's wheelchair. There he sat, tense and absorbed, staring up at the night sky. Doc and I followed his gaze, the way you do automatically when somebody on the night before. The pattern they made still didn't look like anything in particular. I left Doc shaking his head at the sky and went over to give Joey, who encourage the kid in his crazy thinking. "Joey's heard everybody talking about those stars moving, the radio newscasters blared about it, so he's excited too. But he's got a lot more imagination than most again? I've always heard that if a man had faith enough he could move mountains. Well, if a man has the faith in himself that Joey's got maybe he could move stars, too." tonight as ever, Roy. Do you really believe Joey is moving those stars?" "Why not?" I came back. "It's as good an answer as any the experts Doc had given him to study. The thing that stopped me was that Joey was staring at his feet as if they were the first ones he'd ever seen, and he had the same look of intense concentration on his face that I'd Roy. So I'm not going to move any more stars. I'm going to move my a first-class story could be made out of Joey Pond's knack for moving things by looking at them. In a book Joey might have saved the world or destroyed it, depending on which line would interest the most a gang of other kids on Sundays. School opened up a whole new world to Joey and he fitted himself into

<question>:
Even after they normally would have moved on, what seems to keep Doc and Roy at the Twin Palms trailer court?

<options>:
A Doc is sweet on Ethel, and he wants to stay near her.
B Roy finally has a job that he enjoys, and he does not want to leave it.
C They have both essentially given up on life, and they no longer care where they live or where they go.
D They are both interested in and concerned for Joey, and they want to see where the story leads.

<answer>:

D