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

<passage>:
CAPTAIN CHAOS By D. ALLEN MORRISSEY Science equipped David Corbin with borrowed time sent him winging out in a state of suspension to future centuries ... to a dark blue world whose only defense was to seal tight the prying minds of foolish interlopers. "Your name is David Corbin. Do you understand?" "No." "Your name is David Corbin. If you understand, press button A on your "Your name is David Corbin." nothing to me, but I thought about it, watching the relentless lights opened door I had left, and the thought of that questioning voice made crowded with equipment and.... I will always remember the scream of terror, the paralyzing fright of It was space. When I looked again I knew where I was. Why the little room had been I knew more of the puzzle. Something was wrong. After the first shock WHY, Why, Why? The thought kept pounding at me. I was afraid to touch glowing eyes. It had asked me if I understood. Now it must tell me why "Your name is David Corbin. If you understand, press button A on your I pressed the button by the cot. The red lights blinked out as I stood Precaution against forgetting. It was crazy, but I trusted the panel. It was the only thing I saw that the clear portholes. "It is assumed the experiment is a success," the voice said. What experiment? "You have been removed from suspension. Assume manual control of this ship." "Tell me what to do," I shouted wildly. I hammered the hard metal until message there was. In blind panic I pushed away from the panel. the cot. His muscular body was secured by a wide belt. He was as still as death, motionless without warmth or breath as I hovered over him. A flat, illogical voice had instructed me to revive these men. I shivered in spite of the warmth of the room, studying the black box that squatted on a shelf by his head. My hand shook when I touched instructions without knowledge were useless to me. I stopped looking portholes. Everything lay in readiness, fastened down star charts, instruments, glittering equipment. There was no feeling of disorder or use in the room. It waited for human hands to make it operate. Not mine. Not now. they recording? What speeds and perhaps, what distance? It was useless to translate the markings. They stood for anything I might guess, and something kept pricking my mind, telling me I had no time to guess. I at a deep blue eye that stared back in glassy surprise. Four people in all, depending on a blind helpless fool who didn't know their names or the reason for that dependence. I sat beside her on the cot until I no point to start from, no premise to seek. I sensed the place to start was the same type of black box, but out from it was a metal arm, bent looked right. It was then I realized the needle came to a spot where it manually I was lost. I had no knowledge of what to inject or where to look for it. The chamber of the needle that had awakened me was empty. That meant a measured amount. In the laboratory on the lower level I went over the rows of cans and tubes fastened to the shelves. There were earths and minerals, seeds and chemicals, testing equipment in compact drawers, but nothing marked for me. I wondered if I was an engineer or a pilot, or perhaps a doctor sent along to safeguard the others. Complete amnesia would have been I went back to the cabin where the powerful man lay. I had to risk down the thought that he might be the key man, remembering the voice that had given the message. It was up to me, and soon. The metal in the box would have withstood a bullet. It couldn't be pried apart, and I I found it. I swung the massive cover off and set it down. The equipment waited for The needle went into the corded neck of the man. The fluid chamber restlessly, closing his hands into fists. The deep chest rose and fell "Who is in charge of this ship?" I asked. He tensed suddenly. "You are, sir. Why?" wanted him to understand. "Look, I'm in trouble. Nothing fits, except "No." head?" "The others. What about the others?" he blurted. He shook his head, watching me like I was a freak. "Let's check the rest right away." quarters. "What about her. Why is she here?" I asked my companion. He lifted the cover from the apparatus. "She's the chemist in the crew." "There must be men who could have been sent. I've been wondering why a "What is the mission of this ship?" I asked. The question frightened her. "Should I? I feel so strange. Give me a The dark haired man came into the room, silent and watchful. My "Croft. John Croft." "John, what are your duties if any?" "Automatic control. I helped to install it." "Can you run this ship? How about the other two?" searched each face without recognition. The blond man was Carl Herrick, a metallurgist. His lean face was white from his spell but he was "We set out from Earth for a single star in the direction of the center "What direction?" "It was set at about a hundred years, sir. Doesn't that fit at all?" "I can't believe it's possible." "Don't think about it," Paul said. "We can still pull this out all "What are we to do?" she asked. John answered for me. "First we've got to find out where we are. I know this ship but I can't fly it." "Can I?" I asked. We set up a temporary plan of action. Paul took Karen to the laboratory in an effort to help her remember her job. Carl went back to divide the rations. I was to study the charts and manuals. It was better than doing control room and watched John at the panel. "I wish we knew. What about her—Dr. Thiesen?" "She's in the lab. I don't think that will do much good. She's got to be shocked out of a mental state like that." "I guess you're right," he said slowly. "She's trained to administer the suspension on the return trip." I let my breath out slowly. "I didn't think about that." "What about me?" shock treatment? It sounds risky." "I know. It's the only thing I could think of. Why didn't everyone react the same?" control screen. It wasn't operating. "What—made you—think of that," I asked weakly. "Shock treatment." "I must have acted on instinct." John as he was at the base, big and competent, sweating in the blazing sun. the intercom to open. "This is control. Listen ... everyone. I'm over it. Disregard the warning siren ... we were testing the ship." The lab light blinked on as Paul cut in. "What was it ... hey, you said you're all right." "John did it. He hit the alarm figuring I would react. Listen, Paul. Is any one hurt?" "No. Carl is here too. His stomach flopped again but he's okay. What about food. We're supposed to be checked before we eat." "We'll have to go ahead without it. Any change?" "No, I put her to bed. Shall I bring food?" I glanced at John. He rubbed his stomach. "Yes," I answered. "Bring it We had to get off course before we ran into the yellow-white star that had been picked for us. Food was set down by me, grew cold and was carried away and I was still rechecking the figures. We were on a line before I had first looked up at the night sky. When I was sure the electronically recorded course was accurate for time, I checked direction and speed from the readings and plotted our position. If I the screen gave us the distance and size of the star while we fed the figures into the calculator for our rate of approach. Spectroscopic tests were run on the sun and checked against the figures that had been calculated on Earth. We analyzed temperature, magnetic fields, radial motion, density and luminosity, checking against the was selected when the planets in Earth's solar system had proved to be

<question>:
What did David determine the black box was for?

<options>:
A Storage of canned food
B A navigation device
C A device to deliver medication
D Testing equipment

<answer>:

C