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

<passage>:
Circus "Just suppose," said Morgan, "that I did believe you. Just for argument." He glanced up at the man across the restaurant table. "Where would we go from here?" The man shifted uneasily in his seat. He was silent, staring down at his plate. Not a strange-looking man, Morgan thought. Rather ordinary, in fact. A plain face, nose a little too long, fingers a little too dainty, a suit that doesn't quite seem to fit, but all in all, a perfectly ordinary looking man. Maybe too ordinary, Morgan thought. Finally the man looked up. His eyes were dark, with a hunted look in their depths that chilled Morgan a little. "Where he added, "will be that." The place was dark and almost empty. Overhead, a rotary fan swished patiently. The man across from Morgan ran a hand through his dark hair. "There must be some other way," he said. "There has to be." said. "Maybe we can pin something down a little better. You say your name is Parks—right?" The man nodded. "Jefferson Haldeman Parks, if that helps any. Haldeman was my mother's maiden name." Parks nodded. "How did you feel? I mean, was there anything strange that you noticed?" " Strange! " Parks' eyes widened. "I—I was speechless. At else until I hobbled up to that highway and saw those cars coming. Then I could hardly believe my eyes. I thought I was crazy. But a car stopped and asked me if I was going into the city, and I knew I wasn't crazy." Morgan's mouth took a grim line. "You understood the language?" "Oh, yes. I don't see how I could have, but I did. We talked understood each other. His speech had an odd sound, but—" Morgan nodded. "I know, I noticed. What did you do when man wouldn't touch it. Asked me if I thought I was the U.S. Treasury or something. When he saw that I was serious, he Parks dropped two small gold discs on the table. They were perfectly smooth and perfectly round, tapered by wear to a thin blunt edge. There was no design on them, and no printing. Morgan looked up at the man sharply. "What did you get for these?" Parks shrugged. "Too little, I suspect. Two dollars for the also be similar." Morgan sighed and leaned back in his chair. "Well, then what?" Parks poured some more coffee. His face was very pale, "They didn't believe you," said Morgan. "Not for a minute. They laughed in my face." Morgan nodded. "I'm beginning to get the pattern. So what muttered something about cranks and their crazy notions, and when they asked me where I lived, they thought I was—what that I attracted attention, or anything like that, quite the contrary. Nobody even looked at me, unless I said something to different , things that I could show them, and say, see, this proves that I'm telling we don't. And cigarettes. We don't have any such thing as tobacco." The man gave a short laugh. "And your house dogs! We have little animals that look more like rabbits than poodles. But there was nothing any more significant than that. Absolutely nothing." "Except yourself," Morgan said. "Ah, yes. I thought that over carefully. I looked for differences, obvious ones. I couldn't find any. You can see that, just looking at me. So I searched for more subtle things. Skin texture, fingerprints, bone structure, body proportion. I still couldn't find anything. Then I went to a doctor." Morgan's eyebrows lifted. "Good," he said. Parks shrugged tiredly. "Not really. He examined me. He practically took me apart. I carefully refrained from saying anything about who I was or where I came from just said I wanted a complete physical examination, and let him go to it. He was thorough, and when he finished he patted me on the back and said, 'Parks, you've got nothing to worry about. You're as fine, strapping a specimen of a healthy human being as I've ever seen.' And that was that." Parks laughed bitterly. "I guess I was supposed to be happy with the verdict, and instead I was ready to knock him down. It was idiotic, it defied reason, it was infuriating." Morgan nodded sourly. "Because you're not a human being," he said. "That's right. I'm not a human being at all." "How did you happen to pick this planet, or this sun?" Morgan asked curiously. "There must have been a million Parks unbuttoned his collar and rubbed his stubbled chin The warp is blind flying, strictly blind. We send an unmanned and send through a manned scout." He grinned sourly. "Like me. If it looks good to the scout, he signals back, and they leave the warp anchored for a sort of permanent gateway until good for the stars. When the warp principle was discovered, it Morgan. "The same! Your planet and mine are practically twins. Similar cities, similar technology, everything. The people are the same, with precisely the same anatomy and physiology, the same sort of laws, the same institutions, even compatible languages. Can't you see the importance of it? This planet is on the other side of the universe from mine, with the first intelligent life we've yet encountered anywhere. But when I try to tell your people that I'm a native of another star system, they won't believe me !" "Why should they?" asked Morgan. "You look like a human being. You talk like one. You eat like one. You act like one. What you're asking them to believe is utterly incredible." " But it's true. " Morgan shrugged. "So it's true. I won't argue with you. But believe you, what do you expect me to do about it? Why pick me , of all the people you've seen?" There was a desperate light in Parks' eyes. "I was tired, tired know some of the design, some of the power and wiring principles. You have engineers here, technologists, physicists. But they won't do it if they don't believe me. Your government won't listen to me, they won't appropriate any money." "Of course they won't. They've got a war or two on their hands, they have public welfare, and atomic bombs, and at the man. "But what can I "You can write ! That's what you can do. You can tell the know how public interest can be aroused in my world. It must be the same in yours." Morgan didn't move. He just stared. "How many people have you talked to?" he asked. "A dozen, a hundred, maybe a thousand." "And how many believed you?" "You mean nobody would believe you?" " Not one soul. Until I talked to you." And then Morgan was laughing, laughing bitterly, tears rolling down his cheeks. "And I'm the one man who couldn't help you if my life depended on it," he gasped. "You believe me?" Morgan nodded sadly. "I believe you. Yes. I think your planet, not to another star, but I think you're telling the truth." "Then you can "I'm afraid not." "Why not?" "Because I'd be worse than no help at all." Jefferson Parks gripped the table, his knuckles white. "Why?" he cried hoarsely. "If you believe me, why can't you help me?" Parks picked up the magazine, glanced at the bright cover. stopped at a page that carried Roger Morgan's name. His eyes caught the first paragraph and he turned white. He set the magazine down with a trembling hand. "I see," he said, and the life was gone out of his voice. He spread the pages viciously, read the lines again. The paragraph said: "Just suppose," said Martin, "that I did believe you. Just for argument." He glanced up at the man across the table.

<question>:
Why won't people believe that Parks' is an extraterrestrial?

<options>:
A He has too good of a disguise
B He refuses to provide any proof besides his work
C He has a head injury
D He looks and sounds like a human

<answer>:

D