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

<passage>:
when Zarwell arrived that monkey on his back Under the cloud of cast-off identities lay the shape of another man— was it himself? By CHARLES V. DE VET HE was lying motionless on a blue knapsack across his shoulders. Who he was, and what he was doing here, was clouded. The truth lurked in some corner of his consciousness, “It might have been better to kill him right away,” a second, less confident voice said. “It’s supposed “Don’t be stupid. We just do what we’re told. We’ll hold him.” “What do you think they’ll do with him?” “Execute him, I suppose,” the harsh voice said matter-of-factly. “They’re probably just curious to Zarwell opened his eyes a slit to observe his surroundings. It was a mistake. “He’s out of Irrelevantly he wondered how he Zarwell did not deign to acknowledge the other side. It was a trap. He Zarwell followed his gaze to where slipped a coin into a pay slot, opened the zipper on his bag and While their attention was away from him Zarwell had unobtrusively loosened his bonds as much as possible with arm leverage. As the with an instinctive motion. Until that instant he had intended to fight. Now he swiftly reassessed the odds. There were five of them, he saw. He should be able to incapacitate two or three and break out. But the fact that Zarwell told him. that others would very probably be waiting outside. His best course now was to sham ignorance. He they had been expecting him meant relaxed. shot up and locked about his throat, The man’s mouth opened and he tried to yell as he threw himself He offered no resistance as they the cot—and Zarwell’s left hand reached him. drove his fist at Zarwell’s head. Zarwell pulled the struggling The starch went out of his legs. THE analyst dabbed at his upper John Zarwell shook his head. Zarwell did not answer. His “I don’t see why not.” Zarwell at the sight of the gun. He tried Zarwell corrected him. “You’d be foolish!” he showed little fear. Zarwell had adjusted to a life of ease and some prestige to meet danger calmly. Curiosity restrained his trigger finger. “Why would I be foolish?” he asked. “Your Meninger oath of inviolable confidence?” maintained a professional diversionary chatter as he administered The floor beneath Zarwell’s feet you know. If you killed me you’d still have to trust some other analyst.” “Is that the best you can do?” you need me. You’re not through, “But use that logical mind you’re supposed to have! Scenes before this have shown what kind of man patient. If he was skilled enough, he could sort the relevancies from turn you in to the police, I’d have done it before this.” Zarwell debated with himself the truth of what the other had said. “Why didn’t you turn me in?” he asked. and Zarwell sank deep into calmly, even allowed himself to ZARWELL found himself Zarwell’s eyebrows raised. “Who am I?” he asked, very interested now. Without attention he put his pistol away in a trouser A weapon beautiful in its efficient simplicity. He should know all about the instrument, its purpose and workings, but he could not bring his pocket. pressed his advantage. “One more scene might do it,” he said. “Should we try again—if you trust mutual attraction. The man with the gun raised his Zarwell made his decision quickly. ALL Zarwell’s attention seemed twitch, expand and contract. The face was unharmed, yet it was no longer the same. No longer his own features. “No,” Zarwell answered. reflected. It was more than least every twenty hours. Fortunately his natural features concealed by his present perplexity. He was a man who could handle himself well in an emergency. would serve as an adequate disguise now. Bergstrom shrugged, dismissing reticence, however. The man had his strayed thoughts. “I expected Zarwell grunted acknowledgment a small syringe, which he pushed into a trouser pocket, and a single-edged same bearded men who had been razor blade. Zarwell left the analyst’s office. Removing his fiber-cloth jacket from his pocket, he plunged the needle into his forearm and waste chute. He took three more for the shot. But why would you deliberately give yourself amnesia?” “What better disguise than to believe the part you’re playing?” “A good man must have done commented. “I’d have hesitated to try it myself. It must have taken a Zarwell passed a group of lot of trust on your part.” ] “Trust and money,” Zarwell said drily. Zarwell nodded. or distaste. He lay down, fully analyst had done nothing to dispel his ennui. [p 139 Zarwell stopped him with an upraised The next morning when Zarwell awoke he lay for a moment, unmoving. Zarwell explained listlessly. “A If he rested quietly it would government. I helped organize a his mind lost its sleep-induced movement to get them out. There was some bloodshed, but it went all come to him. Yet always, when gang of hoods had taken over the [p as their former masters.’ When they went bad, I opposed them. This time I failed. But I escaped again. I have quite a talent for that also. “I’m not a professional do-gooder.” Zarwell’s tone appealed only as it would have been if he had studied it from blueprints, not my share. Yet, wherever I go, the word eventually gets out, and I’m right back in a fight again. It’s like He rose. “That disguise and streets. Zarwell moved among memory planting were supposed to get me out of it. I should have Johnson can do your own revolting. RESTLESSNESS drove Zarwell was nearing its end. Zarwell was riding a shaggy pony outside a high wall surrounding the stricken metropolis. He moved in and joined a from his flat the next day—a party of short, bearded men, directing he was not surprised. He waited for through, carrying back the defenders who sought vainly to plug the gap. Soon there would be rioting Zarwell turned and studied the man without answering. He was Zarwell was not the leader of the in the streets again, plundering and rebellion. But he had played a leading part in the planning of the strategy that led to the city’s fall. break in the panorama. Now Zarwell was fleeing, pursued by the Zarwell tried to feel the anger he his comrades before. Still he moved with the same firm purpose, vigilant, resourceful, and well prepared for the eventuality that had befallen. He made his escape without difficulty. Against his will he found himself liking the man, and wanting at least I’ll leave—if you tell me to.” “Then will you just listen? After, conflict engulfed him. Weary but resigned he accepted to be courteous. He inclined his Zarwell smiled with mild embarrassment. is beginning to prosper. Yet the only ones receiving the benefits are the rulers. The citizens work twelve hours a day. They are poorly housed , poorly fed, poorly clothed. Zarwell found himself not listening Zarwell’s expression became story was always the same. But why did they always try to drag him into their troubles? Why hadn’t he chosen some other world on which to hide? he seemed satisfied, and he let himself new thought. Just why had he The last question prompted a coincidence? Or had he, subconsciously at least, picked this particular considered himself the unwilling mightn’t some inner compulsion of his own have put the monkey on his back? Zarwell gazed up at the bright as Johnson’s voice went on. The A WORK truck picked Zarwell binding grasses, grain and trees, and diverted rivers to keep it fertile. When there were no rivers to divert they blasted out springs and lakes Zarwell pulled his sun helmet Zarwell gazed idly about at the

<question>:
Why did Zarwell deliberately inject himself?

<options>:
A To forget memories that influence him to join more missions
B To prevent a psychoanalyst from probing his memories
C To disguise himself among civilians in a new society
D To protect himself from corrupt government officials

<answer>:

A