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 other Terran has gone," Terrans to reach the world of Tepokt. For those who did land there, there was no returning—only "Gone? Where did they take The Tepoktan student, whose him?" the bitterness of respect—and justice! group. "Then you can give us no precise count of the stars in the "Get on with it, Klaft! Please!" graying hair. In the clicking Tepoktan put to him often during the ten years since his rocket had hurtled through the meteorite belt and down to the surface of Tepokt, leaving him the only survivor. Barred off as they were from venturing into space, the highly civilized Tepoktans constantly curious to see some of Tepokt. dreamers in matters related to the universe. Because of the veil of meteorites and satellite fragments whirling about their planet, their astronomers had acquired torturous skills but only scraps of real knowledge. which was colored a yellowish tan by a short, grass-like growth, a lone figure plodded toward the Tepoktan was slightly under upthrust bulk of the spaceship the robes their scholars affected, that had never flown. years. The Tepoktans had been "Never mind landing at the Even if they had been aroused that your scientists have managed to measure the distances out to the ship!" of so many stars." Klaft relayed the command to unable to offer the Tepoktans any the pilot. The helicopter swept contraption with a quadruple chamber parted. Klaft, the Tepoktan ground outside drop away. Only upon turning around did he realize that two armed Tepoktans These, he knew, were loaded considered an undertone. The Terran laboriously spelled out the message inscribed on the to fit Tepoktan claws. The constable, this discussion," he announced. "I am informed that another ship from space has reached the surface of Tepokt. My presence is requested in case the crew are of my own planet." [104] Klaft excitedly skipped down tube for launching tiny rockets no thicker than Kinton's thumb. with an explosive worthy of respect on any planet he had heard of. "He has been seen on the road passing the dam," Klaft reported soberly after having been called Tepoktan scientists, historians, to the pilot's compartment. "He stopped to demand fuel from they had been warned and fled." some maintenance workers, but space. Kinton had been inexplicably those Kinton remembered using on Terra twenty light years behind the pilot. In other words, he thought, he was responsible for Birken, who of Tepokt. The time stand in the way of their biologists and surgeons. But he'd rather be buried, even if that which some of the Tepoktan scientists all right. Probably scared the colonial authorities will trail him right down through the Dome of Eyes. Wonder what he did?" they had proved the unpredictability of openings through the Tepokt were underdeveloped. In at the opposite window. In the distance, beyond the town landing field they were now from the inability to break out into interplanetary a certain lack of drive resulted lucky to have reached the surface even in a battered hulk. The shell of meteorites was at least a hundred miles thick and constantly shifting. "We do not know if they have always been meteorites," the Tepoktans had told Kinton, "or whether part of them come from a destroyed satellite but our observers have proved mathematically that no direct path through them may be predicted more than a very short while in advance." like a short spear. "Go down!" Kinton ordered. of Tepokt's sun upon the hull of The pilot landed about a hundred yards from the spaceship. By the time his passengers had the spaceship they had also built to try it. The Tepoktans in which each tiny satellite bright enough to be visible was supposed to watch over a single individual on the surface. Like their brothers on Terra, the native "It's not so damn healthy up there!" called Kinton. "I told you how there's no clear path—" don't mean I gotta believe it." "Wait! Don't you think they tried sending unmanned rockets up? Every one was struck and exploded." of Tepokt was passing by this part of the planet twinkled back at him, and he knew that each was being scrutinized by astronomer. Before an hour had He glanced back at the Tepoktans obscured by the tiny moonlets, some of which could already be seen. These could easily be mistaken for stars or the other five planets of the system, but in a short while the tinier ones in groups would cause a celestial haze resembling a miniature Milky Way. Klaft, who had descended first, leaving the pilot to bring up the with the rocket weapon. ship. "But he'll only get himself killed a Tepoktan proverb often applied destroy the ship! Or if some miracle gets him through, that's worse! He's and who still retreated toward the for a long moment. The Tepoktans satellites had been destroyed or only one. Half a dozen officials hastened up to escort the party to the the motionless Tepoktans The crash had been several hundred miles away, but someone had thought of the hospital in Kinton growled a Tepoktan expression elapsed, most of them would be wreck, alive or dead, had been discovered—had accordingly With a clanging of bells, the little convoy of ground cars drew up in front of the hospital. A way was made through the sidestep, the spear had already hurtled past. It had missed him by an error of over six feet. [113] The spaceman had been cleaned up and bandaged by the spaceship, and had covered nearly half the distance. Kinton ran at the Tepoktans, beside the helicopter, Klaft, the pilot, the officer, the constable of Tepoktan arms, the launcher rested against the chest with the sighting loops before the eyes. The little rocket tubes were above head height, to prevent the handler's catching the blast. The circles of the sights hard. "Thrown across the controls weaved and danced about the George," said the plump Tepoktan sleep, his mouth was thin and Across the hundred-yard space streaked four flaring little projectiles. Kinton, without exactly seeing each, was aware of the general lines of flight diverging gradually to bracket the figure on the bottom rung of the ladder, and skittered away past one fin of the ship before exploding. Two others burst against the hull, scattering metal fragments, and another puffed on the upright of the ladder just above Birken's head. The spaceman was blown back from the ladder. He balanced on his heels for a moment with outstretched into a limp huddle on the yellowing turf. [114] the intervening ground to bend over Birken. anything gets through to the surface, let alone a spaceship. planets were open." Terran colonies?" "Yeah. Jet-hoppers spreadin' all over the other five. None of the land-hungry poops figured a way to set down here, though, or they'd be creepin' around this planet too." "How did you happen to do it? Run out of fuel?" "Why did you not let him go, "What? Why ... why ... he would have destroyed the ship you worked so hard to build. There is no safe path through the Dome of Eyes." "No predictable path," Klaft "They'll fix you up," he assured the spaceman. "They're quite good at it, even if the sight of one does make you think a only way he could repay the Tepoktans upon themselves." "No, I suppose not," sighed Kinton. "I ... it's just—" Space Science Fiction February 1953. Extensive research did not uncover any evidence that the about the planet, Tepokt. tell me little about himself. It may be that he was caught in Tepokt's gravity while fleeing him.

<question>:
Why were the Tepoktan's barred from going into space?

<options>:
A Their religion prohibits it
B They lack the drive for interstellar exploration
C The Terrans have colonized all of the rest of near space
D There is a field of debris blocking their orbit

<answer>:

D