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

<passage>:
Despite his sudden irrational anger toward her, Maitland tried to stick There was a thump. Maitland stirred, came half awake, and opened his Something moved in the darkness on the other side of the room. Maitland brain.... This time, he awoke more normally. He opened his eyes, looked through turned his head, then rolled off the bed, wide awake. This wasn't his room! plant ought to have been, a river wound across the scene, almost hidden beneath its leafy roof of huge ancient trees. Shock contracted Maitland's diaphragm and spread through his body. His breathing quickened. Now he remembered what had happened during the night, the sound in the darkness, the dimly seen figure, and then—what? Blackout.... Where was he? Who had brought him here? For what purpose? He thought he knew the answer to the last of those questions. As it. How? He pivoted to inspect the room. Even before his eyes could take in the details, he had the impression that there was something wrong the door slid aside and disappeared. Maitland glanced in at Maitland stared at her, his face blank. His mind had just manufactured Baffled, he turned again and looked at the large open window—and realized what it was that had made the room seem so queer. in vain that the atomic bomb offered a means of finally destroying the Striding across the room, he lunged forward to peer out and violently banged his forehead. He staggered back, grimacing with pain, then infidel.... movement. What chance would he have? The unfortunate knight would argue It did not look like a jail cell. There were no bars.... He looked out at the peaceful vista of river and prairie. The character of the sunlight seemed to indicate that it was afternoon. He became aware that he was hungry. Where the devil could this place be? And—muscles tightened about his empty stomach—what was in store for him here? He stood trembling, acutely conscious that he was afraid and helpless, until a flicker of motion at the bottom of the hill near the river drew for years with weights. They vanished below his field of view, presumably into the building. He sat down on the edge of the cot and glared helplessly at the floor. About half an hour later, the door he couldn't open slid aside into the up and stared back, conscious suddenly that in his rumpled pajamas he made an unimpressive figure. "What's the idea?" Maitland asked. "What is all this?" Maitland stood there for a moment, deliberately relaxing his tensed Maitland shook his head stubbornly. "You seem to know everything about me," Maitland said defiantly, Something eager leaped in Maitland's breast at the abrupt question, and didn't I? Maitland, I brought you here because you're a man who wants aside, he automatically stood up, and they stared at each other for several seconds. expectancy. Maitland sighed and said, "Hello," then glanced down door for a minute after she was gone. Later, when he had finished the steak and corn on the cob and shredded carrots, and a feeling of warm well-being was diffusing from his stomach to his extremities, he sat down on the bed to watch the sunset and to think. There were three questions for which he required answers before he could formulate any plan or policy. What was the purpose of the "tests" he was being given? It was possible, of course, that this was all an elaborate scheme Maitland felt his worry drain away, leaving an almost mystical sense of Something icy settled on the back of his neck, ran down his spine, and diffused into his body. He stared at the planet unbelievingly, fists clenched, forgetting to breathe. Just now! He realized the truth in that moment. Later, when that jewel of a planet had set and the stars were out, he lay on the bed, still warm with excitement and relief. He didn't have to worry any more about military secrets, or who Swarts was. Those questions were irrelevant now. And now he could accept the psychological tests at their face value most likely, they were what Only one question of importance remained: What year was this? He grimaced in the darkness, an involuntary muscular expression of jubilation and excitement. The future "I'm adaptable," he told himself gleefully. "I can learn fast. There'll be a job for me out there...." If— Suddenly sobered, he rolled over and put his feet on the floor, sat in the darkness thinking. Tomorrow. Tomorrow he would have to find a way of breaking down Swarts' reticence. He would have to make the man but— After a while Maitland smiled to himself and went back to bed. He woke in the morning with someone gently shaking his shoulder. He rolled over and looked up at the girl who had brought him his meal the that she had discarded the white cloak. As he swung his legs to the floor, she started toward the door, carrying the tray with the dirty dishes from yesterday. He stopped her with the word, "Miss!" Wordlessly, Maitland climbed to his feet, preceded Swarts to the 3 x dx" in his head. It was a calculation which required great concentration and frequent tracing back of steps. After several minutes, he noticed that Swarts "We'll try another series of tests." It took Swarts nearly twenty minutes to set up the new apparatus. He He inserted button earphones into Maitland's ears— powder—then blackness. With a deliberate effort, Maitland unclenched his fists and tried to slow his breathing. Some kind of emotional reaction test—what was the countermove? He closed his eyes, but shortly the muscles around them declared excruciatingly that they couldn't keep that up. Maitland gritted his teeth and fought to use his brain then he had it. He thought of a fat slob of a bully who had beaten him up one day after school. He remembered a talk he had heard by a politician who had all the intelligent social responsibility of a rogue gorilla, but no more. He brooded over the damnable stupidity and short-sightedness of Swarts in standing by his silly rules and not telling him about this new world. Within a minute, he was in an ungovernable rage. His muscles tightened against the restraining straps. He panted, sweat came out on his forehead, and he began to curse. Swarts! How he hated.... There was blood hammering in Maitland's temples. His face felt hot and swollen and he writhed against the restraint of the straps. The scene disappeared, the lenses of the projector retreated from his him for a few seconds, then relaxed and smiled weakly. His head was starting to ache from the effort of blinking. That evening, he could hardly wait for her to come. Too excited to sit and watch the sunset, he paced interminably about the room, sometimes whistling nervously, snapping his fingers, sitting down and jittering one leg. After a while he noticed that he was whistling the same theme over and over: a minute's thought identified it as that exuberant Maitland urged her into the chair and sat down on the edge of the bed. His fear that she would be offended proved to be completely unjustified. She merely laughed and said, "There has been much She shook her head, bewildered. "I always thought that would be a tough problem to crack," he agreed. After several seconds, Maitland swallowed. Something seemed to be the that right?" She nodded apprehensively. "I have never heard of it being done." He sank down on the bed and put his face in his hands. After a while he looked up and said bitterly, "You're looking at a man who would give and fingers delicately stroking his brow. Presently he opened his eyes and looked at her. "I just don't understand," he said. "It seemed obvious to me that whenever men were able to reach the planets, they'd

<question>:
Why did Maitland feel he needed to be left alone at the end of the story?

<options>:
A He could not relate to Ingrid and Swarts anymore
B Ingrid had offended him
C He had all the information he needed to return home, but just need discreet alone time to send himself home
D He needed to process his disappointment

<answer>:

D