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

<passage>:
The Sense of Wonder The garden stretched off in unthinkable immensity to the cluster of . This was why the world had moved across the darkness and the stars for all Rikud's lifetime and more. But he was afraid. He reached up and grasped the handle of the door and he saw that his fingers were red with the wetness which had come from his hurt head. going, how can they tell when it has arrived? When nobody aboard ship remembers where it's the U.S. copyright on this publication was renewed.] from the steady whining Rikud had heard all twenty-five years of his life, to the sullen roar that came to his ears now, the feelings had grown. If anyone else had noticed the change, he failed to mention it. This disturbed Rikud, although he could not tell why. And, because he had realized this odd difference in himself, he kept it locked up inside him. everyone fled before him. He stumbled again in the place of the which he could see in the dim light through the open door. "Where's the buzzer?" he sobbed. "I must find the buzzer." ignored it. But it came again, and each time it left him with a feeling he could not explain. Why should he think thoughts that no other man had? Why should he think he was thinking such thoughts, when it always embroiled him in a hopeless, infinite confusion that left him with a headache? Every day for a week now, Rikud had come to the viewport to watch walked around aimlessly, touching the plants and bending down to feel larger every moment. He turned to go, but the door clicked shut and a Rikud muttered to himself and undressed. The world had begun to annoy him. Now why shouldn't a man be permitted to do what he wanted, when he wanted to do it? There was a strange thought, and Rikud's brain He had even wondered what it was like to get hurt. No one ever got hurt. Once, here in this same ray room, he had had the impulse to hurl exciting. He liked them. He liked the garden, for all its hugeness. himself head-first against the wall, just to see what would happen. Rikud had been stopped in this action, although there was no real authority to stop him. This puzzled him, because somehow he felt that him, bathing his old body in a forgotten magic which, many generations before Rikud's time, had negated the necessity for a knowledge of medicine. But when, in another ten years, Chuls would perish of old often thought of his own death, still seventy-five years in the future, not without a sense of alarm. Yet old Chuls seemed heedless, with only it meant that, in the two unoccupied hours before sleep, he went to the knew his lame-footed companion understood the word no better than he did. "Well, it's wrong. Variability and change are two words without meaning." turn away. Here was an unknown factor which the perfect world failed he couldn't at first accept it. Instead, he blinked and rubbed his Startled, Rikud leaped back. The sullen roar in the rear of the world had ceased abruptly. Instead an ominous silence, broken at regular Change— "Won't you eat, Rikud?" Chuls called from somewhere down below. "Damn the man," Rikud thought. Then aloud: "Yes, I'll eat. Later." and for a while he struggled with it. What he saw—what he had always seen, except that now there was the added factor of change—perhaps did "Broom, brroom, brrroom!" Chuls imitated the intermittent blasting of the engines. "I'm hungry, Rikud." moment Rikud thought he could see the gardens rearward in the world. But that was silly. What were the gardens doing in the viewport? And never seen before, although he had always liked to stroll through the he admitted to Rikud. "But why should the garden be in the viewport?" And when Chuls looked away in disinterest, Rikud became angry. If only the man would realize! If only anyone would realize! It all seemed so obvious. If he, Rikud, walked from one part of the world to another, was purposeful. The world had arrived at the garden for a reason. But they find the nature of that purpose? "I will eat," Chuls said, breaking Rikud's revery. Damn the man, all he did was eat! He had long wondered about the door in the back of the library, and He missed the beginning, but then: door. The machinery in the next room is your protection against the When he opened the door a strange new noise filled his ears, a gentle hand on the door, all the while watching the garden through the new Then he trembled. What would he do out in the garden? He couldn't go alone. He'd die of the strangeness. It was a silly thought sweat covered him in a clammy film. He never wanted to look at the garden again. Not when he knew there was a door through which he could walk and then might find himself in the garden. It was so big. Three or four days passed before Rikud calmed himself enough to interested, yet the lame-footed man's mind was inadequate to cope with "Doing what?" "Speaking so loudly when Chuls, who is close, obviously has no trouble hearing you." "Maybe yelling will make him understand." "Why don't we go see?" he suggested. Then, confused, he frowned. "Well, I won't go," Chuls replied. "There's no reason to go. If Rikud has been imagining things, why should I?" "I imagined nothing. I'll show you—" "You'll show me nothing because I won't go." buzzer, bathed in the health-rays with it, slept with it. What would they do if the buzzer stopped buzzing? This frightened Rikud, although he didn't know why. He'd like it, though. Maybe then he could take them outside with him to the big garden of the two viewports. And then he wouldn't be afraid because he spinning and humming. He watched for he knew not how long. And then he began to wonder. If he destroyed the wheels and the cogs and the gears, would the buzzer stop? It probably would, because, as Rikud saw it, he was clearly an "unauthorized person." He had heard the voice again upon entering the room. whimpering to the dining room, his tongue dry and swollen, but the "It won't any more," Rikud said. "What won't?" "The buzzer will never sound again. I broke it." "That's ridiculous," Chuls said. Even Crifer now was angry at Rikud. "He broke the buzzer and no one can frond and tasted it. It had been bitter, but not unpleasant. Maybe the weak to rise. Rikud, too, felt a strange light-headedness and a gnawing hurt in his stomach. But it didn't matter. He heard the angry voices and the feet pounding behind him, and he wanted only to get away. It was dark and he was hungry and everyone who was strong enough to run was chasing him, but every time he thought of the garden outside, and how big it was, the darkness and the hunger and the people chasing him were unimportant. It was so big that it would swallow him up completely and positively. He became sickly giddy thinking about it. But if he didn't open the door and go into the garden outside, he would die because he had no food and no water and his stomach gurgled and grumbled and hurt. And everyone was chasing him. He stumbled through the darkness and felt his way back to the library, it frightened Rikud and it made his eyes smart, and he could hear those behind him retreating to a safe distance. But their voices were not far away, and he knew they would come after him because they wanted to break him.

<question>:
One of the main causes of trepidation as Riduk prepares to enter the garden is

<options>:
A nothing.  Riduk is ready to go.
B is its vast endlessness.
C Riduk is fearful that his shipmates will want to go with him, and he wants the garden and its beauty for himself.
D that Riduk is fearful he will get caught and punished for attempting to leave.

<answer>:

B