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 Dwindling years of habit carried the forcing him to make this decision. And maybe it would do no good. Maybe the ship would fail. But through the morning ritual his neck was pounding and his automatic. Somehow, thinking had grown difficult in the mornings recently. cure any allergy or asthma. serious, but quite definite—as well as other signs of aging. I’m afraid the treatment didn’t take fully. It might have been some unconscious block on your part, some infection not the coffee stronger than usual and it seemed to cut through “I guess I’m getting old, Amanda.” some of the thickness in his head. and then smiled. “So we’ll give you another treatment. Any reason you can’t begin immediately?” impossible. “Anything urgent on the Procyon He resented every second of it. It was as if the almost forgotten specter of age stood beside him, they were through and he was led into the quiet rejuvenation room, where the clamps were adjusted about his head and the earpieces painlessly into his arm and the light-pulser was adjusted to his brain-wave pattern. It had been nothing like this his first time. Then it had required months of mental training, followed by crude mechanical and drug hypnosis for other months. Somewhere in every human brain lay the memory of what his cells had been like when he was young. Or perhaps it lay in the cells themselves, with the brain as only a linkage to it. They’d discovered that, and the fact that the mind could effect physical changes in the body. Even such things as cancer could be willed out of existence—provided the brain could be reached far below the conscious level and forced to operate. There had been impossible every conceivable device to make them return automatically after within minutes, even—but finding the mechanism in the brain that worked those miracles had taken an incredible amount of study and finding a means of bringing it under control had taken even longer. Now they did it with dozens of mechanical aids in addition to the hypnotic instructions—and did it usually in a single sitting, with the full transformation of the body taking less than a week after the treatment! But with all the equipment, it wasn’t impossible for a mistake message that had come on the shuttle. He fingered the microstrip mind was easy to reach ... he could relax so easily.... He came out of it without even a headache, while they were removing the probes, but the with the eternal unconscious passed the drastic birth limitation find himself suddenly young again. But that, of course, was ridiculous. It took days for the mind to work on all the cells and to repair the damage of time. act and his mother had spoiled him. He’d even tried to an injection of some kind and Oddly enough, the message in the next frame showed none of repeated. But finally the doctor nodded. expectation that he would avoid the compulsory emigration The discovery that men could live practically forever had put an end to most family ties sentiment wore thin in half a century—which now, though it had once seemed long enough. to get shorter as their number increased. awake most of the night again, trying to recall them. The outside line buzzed musically, flashing Research’s number. He found a single table in the dining room and picked his way through the meal, listening to when it was necessary because someone called across to him. richness of living now. He gave it up and went to bed—to “Antigravity!” His voice was Harry had been a complete nuisance, running around with various nostrums, giving him no Jordan cursed harshly. “So we can send a message on the shuttle, buildings outside should night’s sleep after a little relaxation. Even that failed him, though. He’d developed one of the finest world no real progress had been made in two centuries the young have given him a sense of security. What he needed was a good he’d developed through new thinking. There was a measure of truth in it, unfortunately. “They’ll slow up when their populations fill,” Giles repeated to help. He felt choked, imprisoned, the years helped to add to the other discoveries eventually, without interrupting the work of making the Earth fit for our longevity. We can wait. We’ll have to.” down to something or other. was no escaping it. Something about the years—or was it days—dwindling reached Sirius in less than ten days. We can have the secret of this antigravity in less than a year! We—” thickness pushing back at his mind and tried to fight it off. He’d permanently? He fought that off, but he couldn’t escape the nagging What? ” Jordan’s voice rattled the speaker. “Of course not! It took two accidents to get the thing back to us—and with a doubts at the doctor’s words. centuries, if we can ever master it. Even with Sirius expecting the missiles and ready to cooperate. now we can finish it in three months. We know the drive works. We know it’s fast enough to reach Procyon in two weeks. We even could correct for errors on arrival. Maybe if we put in stronger signaling transmitters....” “Yeah. Maybe in two centuries have proved it safe for human GILES TRIED to stop scaring himself and partially succeeded, until he reached the doctor’s office. Then it was no longer necessary rest of your life rather than waiting a couple more centuries until now. The machines were quiet—and all the doors were shut. Giles shook his head, interrupting the doctor’s technical jargon. Now that he knew there was reason Then the engineer shut his mouth slowly. The belligerence ran out of him. for his fear, it seemed to truth,” he said. His voice sounded dead in his ears. “The worst first. The rejuvenation...?” against such a relatively short Cobb sighed and yet seemed relieved. “Failed.” He stopped, and numbed him. “I’d rather know the whole “It may take longer, but eventually we’ll find a way. With time in a low, defeated tone. “But I thought that was impossible!” to simplify it, no memory is perfect—even cellular memory. It plan for short-term benefits. Usually it was too easy to realize that, and the sight of the solid, time-enduring loses a little each time. And the effect is cumulative. It’s like an asymptotic curve—the further it goes, the steeper the curve. And—well, drawer and locking it. “I wasn’t supposed to tell you, of course. It’s going to be tough enough Today, though, nothing seemed back so violently that his hand you won’t be the last, if that’s any consolation. We’ve got a longer time scale than we used to have—but jerked painfully on the forelock it’s in centuries, not in eons. For everybody, not just Like an automaton, he bent forward, his other hand groping we can make them better. Geriatric knowledge is still on record. We can fix the heart and all the rest. You’ll be in good physical condition, better than your grandfather—” “And then....” Giles couldn’t pronounce the words. He’d grown old and he’d grow older. And eventually he’d die! stop twice to catch his breath and fight against the pain that clawed at his chest. When he at once, with a hand under all he could and had at least saved him the suspense of growing doubt and horrible eventual discovery. his arm to guide him toward his alcohol combined with the reaction and started to slow. Then he went on without stopping. He wanted no chance to have them hardly explain his taking a twenty-year speed up the work in some ways still, even if he could never see its finish. came to his lips. “I saw the doctor, Amanda, so you can stop growing old.” childish! Yet he relished the feeling of even with modern safety measures spend the long future as a cripple. ties melted away too fast for interstellar itself. “The years dwindle down to a precious few....” he remembered. needles and the machinery behind the doctor began working on it. faith cures for millenia—cataracts He looked sick, for he had no removed from blinded eyes

<question>:
In simple terms, how does the anti-aging process work?

<options>:
A It makes your brain think it’s younger through memories, and treat the body’s growth that way.
B It tricks the patient into believing they’re younger.
C It replaces key parts in your cells with young cells.
D It halts growth all together by communicating with your brain.

<answer>:

A