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

<passage>:
luxuries, including women. If it only had a lease that could be broken— thought them up in a moment of utter boredom and they were extremely back her hair, got to her feet a trifle awkwardly because of the tight-fitting tubular gown. "If I could do anything about it...." "But you can't," he told her. "They're too clever." on with it." He could sense the restless stirring of the woman within Dana, just as he could feel the stirring toward her within himself—desire that both of them loathed because it was implanted within them by their captors. They walked toward the house. something that might cheer her up, for she was by far the youngest of the three female captives, barely nineteen. But with the eyes of the other two, especially Dana, upon him, he could not. copied, though he did not know why. She laughed at him silently, tossed her close, although neither of them felt desire at the moment. Their captors had seen to that it wasn't Eudalia's turn. Tennant said, "I wish I could do something about this. I hate seeing Dana so bitter and Olga so scared. It isn't their fault." "I'll try not to," he said and stopped, realizing the family party was over. He had felt the inner tug of command, said good-by to the women and returned to his smaller compound within its own barrier dome. Then came the invisible aura of strain in the air, the shimmering illusion of heat that was not heat, that was prelude to his teleportation ... if that were the word. It was neither pleasant nor unpleasant it cosmic impact, yet it had reason. He knew this even though no reason Tennant knew, meant nothing iridescent and shot with constantly changing colors. Hence the name Opal. Communication was telepathic. Tennant could have yodeled or yelled He went through the entire routine at Opal's bidding. When at last he was allowed to relax, he wondered, not for the first time, if he weren't mastering some of the alleged Guru arts. At once he felt probing investigation. Opal, like the rest of the captors, was as helpless futility when their masters taught them to heel, to point, to retrieve. Some days later, the training routine was broken. He felt a sudden stir of near-sick excitement as he received the thought: Now you are ready. We are going through at last. Opal was nervous, so much so that he revealed more than he intended. Or perhaps that was his intent Tennant could never be sure. They were going through to Tennant's own dimension. He wondered briefly just what his role was to be. He had little time to speculate before Opal seemed to envelop him. There was the blurring wrench of forced teleportation and they were in another room, a room which ended in a huge irregular passage that might received quick reproof that made his head ring as from a blow. He asked Opal where and when they were going, was informed that he would soon emerge on Earth where he had left it. That told him everything but the date and season. Opal, like the rest of the captors, seemed to have no understanding of time in a human sense. Waiting, Tennant tried not to think of his wife, of the fact that he hadn't seen her in—was it more than a year and a half on Earth? He could have controlled his heartbeat with one of his new powers, but that might have made Opal suspicious. He should be somewhat excited. He allowed himself to be, though he obscured the reasons. He was going to see his wife again ... and maybe he could trick his way into not returning. He shrugged, returned to the feeling of comfort that came from being back here, about to see Agatha again, hold her close in no more than a few minutes. And stay, his mind began to add eagerly, but he pushed the thought down where Opal could not detect it. He took another deep, lung-filling drag on his cigarette, looked around the room that was so important a part of his life. The three women back there would be in a ghastly spot. He felt like a heel for wanting to leave them there, then knew that he would try somehow to get them out. Not, of course, anything that would endanger his remaining with Agatha the only way his captors would get him back would be as a taxidermist's specimen. He realized, shocked and scared, that his thoughts of escape had slipped past his mental censor, and he waited apprehensively for Opal to strike. Nothing happened and he warily relaxed. Opal wasn't tapping his thoughts. Because he felt sure of his captive ... or because he couldn't on Earth? It was like being let out of a cage. Tennant grinned at the bookcase in the cellar rumpus room, where its bleached modernity wouldn't clash with the casual antiquity of the living room. Agatha would complain, naturally, but his being back would make up for him, her lovely face lifted to be kissed, and his heart lurched like an adolescent's. This hunger was real, not implanted. Everything would be The thought message from Opal crumbled his illusion of freedom. He sank down in a chair, trying to refuse to listen to the rest of the command: You are to bring the man through the gateway with you. We want another Opal had been too interested in the next lab specimen to bother about his thoughts—that was why he had been free to think of escape. Tennant closed his eyes, willed himself to the front window. Now that he had mastered teleportation, it was incredible how much easier it was in his own world. He had covered the two miles from the gateway to the house in a mere seven jumps, the distance to the window in an instant. But there was no pleasure in it, only a confirmation of his captor's power over him. He was not free of them. He understood all too well what they wanted him to do when it was followed by a deeper rumbling laugh. Sudden fear made the cigarette shake in his fingers. a grab for me . He'd had one too many and only wanted a little fun. out of hand, but whose inherent aggressive grace had not yet deserted him. The man Roger! "Roger," repeated Tennant viciously. He felt sick with disgust. Maybe captors had let him. "Where in hell So, Tennant thought, they hadn't used the gateway. Not since they had brought the four of them through, not since they had begun to train him for his Judas ram duties. desperately for six years, and he no longer wanted her. He was acutely conscious of her perfume. It wrapped them both like an exotic blanket, chin, the arch of nostril, the carmine fullness of lower lip, the swell of bosom above low-cut gown. And he no longer wanted any of it or want to do?" Take her back? He smiled ironically she wouldn't know what that meant. It would serve her right, but maybe there was another way. " What can you promise?" demanded Tennant. When Gordon's onset lift? I have a conveyance of sorts a couple of miles down the road." He needed no telepathic powers to read the thoughts around him then. He heard Agatha's quick intake of breath, saw the split-second look she exchanged with Cass. He turned away, knowing that she was imploring her lover to do something, anything , as long as it was safe. Deliberately, Tennant poured himself a second drink. This might be easier and pleasanter than he had expected. They deserved some of the suffering he had had and there was a chance that they might get it. had simply picked him up. Otherwise, apparently, men were next to impossible for them to capture. All they could do was kill them and bring back their heads and hides body chemistry or psychology, perhaps. More than once, during his long training with Opal, Tennant had sent questing thoughts toward his captor, asking why they didn't simply set up the gateway in some town or city and take as many humans as they wanted. Surprisingly there had been a definite fear reaction. As nearly as he

<question>:
What didn't Roger learn when he returned to Earth?

<options>:
A that the aliens couldn't capture other men
B that he had been in a car accident
C that his wife had found someone new
D that he could stay if he used his new powers

<answer>:

D