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

<passage>:
just wanted to get back his memory—and the methods he used were gently hellish, from the viewpoint of the others.... therefore, he occupied the shack on mining colony there. Some people shack and the landing field and the it, and mentioned the scar of a ghastly head-wound to explain his ability. One man partly guessed the secret, but only partly. His name was Sattell and he had reason not to were located in the medieval notion of the physical appearance of hell. By day the environment was heat and torment. By night—lunar night, of course, and lunar day—it was frigidity children had owned and loved. He He envisioned a way to increase stores for the colony deep underground. that recovery. But there was a marked from Earth, on a voyage equal to rather more than a thousand times around the equator of the Earth. Artists' supplies were not often included. Earth. He collected stones of various sorts, but when warmed up in the shack they were useless. He found Crack would have had to shut down. The Crack, of course, was that minerals which could be pulverized and used as pigments, but nothing suitable for this new adventure in no strictly lunar material which the recovery of lost youth. He even CO 2 is nothing like it on Earth, of course. When it was first found, scientists descended into it to examine the exposed merely more CO 2 for the colony and the rocket landing have been perfect, but there is no marble on the Moon. Naturally! Yet be insulation against the cold of night and shadow and the furnace heat of day. Pop lived in it all alone, and in his spare time he worked industriously at recovering some looking for anything of the sort, but out of the corner of his eye he observed in the colony underground. There were galleries and tunnels and living-quarters fresh, and all sorts of things to make life possible for men under if not on the Moon. But it wasn't fun, even underground. In the Moon's slight gravity, a man is really adjusted to existence when he has a well-developed case of agoraphobia. With such an aid, a happily tell himself that it feels delicious. Sometimes it does. the low gravity to tear a man's nerves to shreds. He has to develop kinks in his head to survive. And down with the singular deliberation of falling objects on the Moon. It was just barely past lunar sunrise on the far side of the Moon. Incredibly long and utterly black enough to be utterly unable to face the idea of open spaces. Even now white and half was blacker than blackness itself. The sun still hung low indeed in the black, star-speckled The first men to leave the colony containing a hundred Earth-pounds "Don't come in!" he said mockingly. "And I don't give a damn brought back some vague and cloudy memories. They were not sharp, quite take it in. "This," snapped the red-headed weapon. It drew blood. It was wanton, savage brutality. "Pay attention!" snarled the red-headed thicker than foil. While they stayed at space-shadow temperature, the foil the Moon. He panted: "And get it straight! You try face. He seemed filled with fury, at least partly hysterical. It was the tension savagery due to terror. But, of course, Pop was helpless to resent children and some of the happiness If he did, there'd be no way to recover more lost memories. Somehow, the mention of Sattell had made his mind work better. It always the mine, for example. In each two Earth-weeks of working, the mine-colony cannister with greasy-seeming white crystals shaped like two pyramids on Earth its contents would be computed and called the mine-colony But he did not dwell on such speculation. The sun rose very, very slowly in what by convention was called the east. It took nearly two hours to urge its disk above the horizon, and it burned terribly in emptiness for fourteen times twenty-four hours before sunset. Then there and Pop and the colony together. and thirty-six consecutive hours there were only stars overhead and the was night, and for three hundred who looked up into it—what with the nagging sensation of one-sixth gravity—tended to lose all confidence in the stability of things. Most men fell, too. Wherefore most men tended to scream. back on Earth long before a new cable's been got and let down to you. So they'll do all they can no matter what I do." He added, "I wouldn't of his children came out of emptiness and grew sharp and clear. He found that he loved them very youth that had been lost. Otherwise, he was wholly matter-of-fact—certainly so for the far side of the Moon. He was a rather fussy housekeeper. The shack above the two children, playing together. He the shadow of the shack he had an unfailing source of extreme low and CO 2 fly to pieces from internal stress. On the Moon, it was not desirable that diamonds be exposed to repeated violent changes of temperature. So a thermware-lined cannister quantity of uncut diamonds? CO 2 fresh air from the now-enriched pinnacles reared in the starlight, and craters complained of the bombardment All the inside of the shack was breathed a sigh of relief when it was in place. He'd arranged for it to break a frozen-brittle switch as it descended. When it came off, the switch would light the lamp with its bare filament. There was powdered magnesium in contact with it and liquid oxygen all about. from space that had made them. had plenty—it became a really truthful likeness. The sun rose, and baked the abomination of desolation which was together for always, with one complete inky shadows stretched enormous distances, utterly black. The sun, like a glowing octopod, floated low at the edge of things and seemed to hate all creation. clearly the way one of his children had looked while playing come up." The red-headed man snarled. But crime. He wanted his youth back. He was recovering it bit by bit. The occupation made it absurdly easy to live on the surface of the far side of the Moon, whether anybody else his eyes were on the cannister whose contents should weigh a hundred to the lunar state of things. Living on the Moon was bad enough pounds on Earth. "Any tricks," he rasped, "and you know what happens!" could do it or not. had made no overt attempt to revenge himself because he planned some retaliation so horrible and lingering ferocity. And fear. In his mind the need to escape became an obsession There was the most luridly bright of all possible flashes. There was no sound, of course. But something flamed very brightly, and the ground Even with magnesium powder to start the flame when a bare light-filament prison, trying to induce someone to help him escape. ignited it, the cannister-bomb hadn't equaled—say—T.N.T. He had friends, of a sort, but for circles about the Earth, and the Earth swung sedately about the Sun. The other planets danced their saraband. The rest of humanity went about its nothing. The Moon swung in vast bore directly upon Pop Young and Sattell and Pop Young's missing years. a luxury passenger-line of spaceships to ply between Earth and But the passengers who paid so highly, expected to be pleasantly thrilled and shielded from all reasons for alarm. And they couldn't be. Something happens when a self-centered and complacent individual unsuspectingly blindness against reality. It is shattering. A millionaire cut his throat when he saw Earth dwindled to a mere than ever, now! He didn't wonder what he'd do face of immensity. Not one passenger disembarked even for Lunar City. Most of them cowered in their chairs, hiding their eyes. They were the simple cases of hysteria. But the catatonic withdrawal and neither saw nor heard nor moved. Two other to do. Workers for the lunar mines sedation. But it was too early in the development of space-travel for pleasure-passengers. They weren't

<question>:
What do the colony inhabitants share?

<options>:
A traumatic brain injuries
B criminal backgrounds
C fear of open spaces
D aversion to sunlight

<answer>:

C