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 Rikud looked out upon the garden and he trembled. Out there was life. The garden stretched off in unthinkable immensity to the cluster of low mounds against the bright blue which roofed the many plants. If By MILTON LESSER Illustrated by HARRY ROSENBAUM . This was why the world had moved across the darkness and the stars for all Rikud's lifetime and more. going, how can they tell when it has arrived? He reached up and grasped the handle of the door and he saw that his the great changeless sweep of space. He could not quite explain the feelings within him heard the voices again, and soon a foot and then another pounded on 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 Tugging at the handle of the door, Rikud pulled himself upright. him. Today, space looked somehow different. The stars—it was a meaningless everyone fled before him. He stumbled again in the place of the apparent in the speckled profusion Rikud had always known. Instead, there was more of the blackness, and one very bright star set apart "Where's the buzzer?" he sobbed. "I must find the buzzer." down against it, exhausted. Behind him, the voices and the footsteps So tightly did he grip the handle that his fingers began to hurt. And his heart pounded hard and he felt the pulses leaping on either side of embroiled him in a hopeless, infinite confusion that left him with a Crifer was tugging at him, trying to pull him away from the door, and out and the hands let go, and then he turned the handle and shoved the weight of his body with all his strength against the door. It opened and he stepped outside into the warmth. explain had entered the elder man's head for a moment, but it had The air was fresh, fresher than any air Rikud had ever breathed. He the floor, and sometimes he looked at the blue-white globe on the horizon. It was all very beautiful. 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 others followed. They stood around for a long time before going to the was a strange thought, and Rikud's brain unsatisfactory answers. He had even wondered what it was like to get hurt. No one ever got But something soft had cushioned the impact—something which had come It was much better than the small world of machinery, buzzer, frightening doors and women by appointment only. Rikud felt at home. into being just for the moment and then abruptly passed into non-being had decided that they did not know where they were going, or why, and had to admit to himself that it was not unpleasant. He could see the look of easy contentment on Chuls' face as the rays fanned down upon him, bathing his old body in a forgotten magic which, many generations before Rikud's time, had negated the necessity for a knowledge of not without a sense of alarm. Yet old Chuls seemed heedless, with only this was the only case of its kind, the exception to the rule, but it proved the world was not perfect. Rikud was guiltily glad when he saw questioned what it might mean in this particular case. "Yes, there are less of them, and one is bigger and brighter than the others." "Well, it's wrong. Variability and change are two words without meaning." concepts, yet it was so clear. Or was it? He had had it a moment ago, but now it faded, and change and old were just two words. remembered his childhood among women. But his feelings had changed this was different. Again there were inexplicable feelings—strange channelings of Rikud's energy in new and confusing directions. He shrugged and reserved the thought for later. He wanted to see the stars again. The view had changed, and the strangeness of it made Rikud's pulses light, white with a tinge of blue in it, and so bright that it hurt his eyes to look. he couldn't at first accept it. Instead, he blinked and rubbed his that it spread out over almost the entire surface. Something big and round, all grays and greens and browns, and something for which Rikud had no name. viewport, and its size as well. It seemed neatly sheered down the middle, so that on one side Rikud saw an expanse of brown and green, and on the other, blue. Startled, Rikud leaped back. The sullen roar in the rear of the world had ceased abruptly. Instead an ominous silence, broken at regular through nothing but an obscuring cloud of white vapor, murky, swirling, more confusing than ever. "What else?" "Else? Nothing." Anger welled up inside Rikud. "All right," he said, "listen. What do the engines. "I'm hungry, Rikud." not tell them of his most amazing thought of all. The change in the It changed. Where are the stars? He had long wondered about the door in the back of the library, and door. through the door." it. It's only a door." "Open it. Open the door and look inside." door. The machinery in the next room is your protection against the have discarded it for something better—who knows? But if you have not, then here is your protection. As nearly as possible, this ship is a perfect, self-sustaining world. It is more than that: it is human-sustaining as well. Try to hurt yourself and the ship will not permit it—within limits, of course. But you can damage the ship, and permitted through this door— When he opened the door a strange new noise filled his ears, a gentle they shone with a luster unfamiliar to him. Then he trembled. thought no one ever died of anything until he was a hundred. Rikud couldn't fathom the rapid thumping of his heart. And Rikud's mouth felt dry he wanted to swallow, but couldn't. through the tunnel and then through the room of machinery and finally through the little room with the confusing voice to Crifer. Chuls tugged at his wrist. By this time a crowd had gathered. Some of A buzzer sounded and automatically Rikud found himself releasing Chuls. 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, upon entering the room. casual. Soon his easy strides had given way to frenzied running. Rikud smashed everything in sight. clearly. All else was bathed in a shadow of unreality. Rikud never wanted to do anything more than he wanted to open that door. But his hands trembled too much when he touched it, and once, darkness, something bright flashed briefly through the sky and was gone. Whimpering, he fled. confidently. "It won't any more," Rikud said. "What won't?" "I hit him! I hit him!" he did not like the sound of the angry voices. Someone said, "Let us 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. and positively. He became sickly giddy thinking about it. He stumbled through the darkness and felt his way back to the library, through the inner door and into the room with the voice—but the voice didn't speak this time—through its door and into the place of machinery. Behind him, he could hear the voices at the first door, and He got up slowly and opened the next door. The voices behind him were 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

<question>:
The characters experience many emotions for the first time during the events of this story.  What emotion(s) push the characters through the door.

<options>:
A Sadness
B Hatred and anger.
C Excitement and curiosity.
D Pure happiness.

<answer>:

B