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

<passage>:
Spawning Ground By LESTER DEL REY They weren't human. They were something more—and something less—they were, in short, humanity's hopes for survival! [Transcriber's Note: This etext was produced from "About a dozen blobs held something like a convention a little ways clouds." The blobs were a peculiarity of this planet about which nobody knew anything. They looked like overgrown fireballs, but seemed to have an almost sentient curiosity about anything moving on the ground. "And in the murk. I've kept a signal going to guide them back." Gwayne swore softly to himself. Earth couldn't turn out enough starmen Pinelli, seemed to be totally devoid of any sense of caution. Of course there was no obvious need for caution here. The blobs hadn't seemed dangerous, and the local animals were apparently all herbivorous and harmless. They were ugly enough, looking like insects in spite of their internal skeletons, with anywhere from four to twelve legs each on their segmented bodies. None acted like dangerous beasts. But something glowed yellow-green. Motions around them suggested a herd of feeding animals. Details were impossible to see through the haze. Even the There were three of the blobs dancing about over the grazing animals deep-sleep stored colonists on Official World 71, to check on any sign already. If there was no sign in another day or so of what had happened to the men who'd deserted their ship and its equipment, he'd have to "Bob!" Jane Corey's voice cut through his pondering. "Bob, there are the kids!" The blobs had left the herd. Now the three were streaking at fantastic spite of the load of the two struggling boys! The creatures dived "Follow the blobs," Gwayne yelled. He realized now he'd been a fool to The blobs danced after the horde. Barker bounced the jeep downward into but he had to slow as the fog thickened lower down. Then it cleared to show the mob of creatures doubling back on their own trail to confuse the pursuers. the horde would all vanish in the uneven ground, hidden by the fog. A blob dropped down, almost touching Gwayne. He threw up an instinctive hand. There was a tingling as the creature his own head, as if feeling the shock of the monster's landing. "I hope so," Gwayne told him. "I want that thing to live—and you're detailed to save it and revive it. Find out if it can make sign and why that ship was buried against detection. This thing may be the answer." Barker nodded grimly. "I'll try, though I can't risk drugs on an alien sickly. Smoke and this air made a foul combination. "Bob, it still makes no sense. We've scoured this planet by infra-red, and there was no sign of native villages or culture. We should have found some." busy being little heroes. Gwayne sentenced them to quarters as soon as he could, knowing their stories would only get wilder and less informative with retelling. If they could get any story from the captured creature, they might save time and be better off than trying to dig through Hennessy's ship. That was almost certainly spoorless by now. The only possible answer seemed been overcome by the aliens. It was an answer, but it left a lot of questions. How could the fuel dumped? Only men would have known how to do that. And who told these creatures that a space ship's metal finders could be fooled by a little more than a hundred feet of solid rock? They'd buried the ship cunningly, and only the accidental slippage had undone their work. Maybe there would never be a full answer, but he had to find something—and find it fast. Earth needed every world she could make remotely habitable, or mankind was probably doomed to extinction. The race had blundered safely through its discovery of atomic weapons into a peace that had lasted two hundred years. It had managed to prevent an interplanetary war with the Venus colonists. It had found a drive that led to the stars, and hadn't even found intelligent life there to be dangerous on the few worlds that had cultures of their own. It wouldn't be much of an explosion, as such things go—but it would render the whole Solar System uninhabitable for millenia. To survive, man had to colonize. And there were no worlds perfect for him, as Earth had been. The explorers went out in desperation to find what they could the terraforming teams did what they could. And then the big starships began filling worlds with colonists, carried in deep sleep to conserve space. would be spawning grounds for mankind in spite of the efforts. Each was If this world could be used, it would be nearer than most. If not, as it now seemed, no more time could be wasted here. Primitives could be overcome, maybe. It would be ruthless and unfair to strip them of their world, but the first law was survival. But how could primitives do what these must have done? He studied the spear he had salvaged. It was on a staff made of hand had been able to do for centuries. "He never meant to hurt the kids—just to talk to them," Barker cut in quickly. "I've got some of the story. He's changed. He can't talk very well. Says they've had to change the language around to make the sounds fit, and he's forgotten how to use what normal English he can. But it Gwayne had his own ideas on that. It was easy for an alien to seize on the gold ornament of a captive earthman, even to learn a little twisted speech from inhuman vocal cords better. But the story took a long time telling. ground where no ingenuity could ever recover it to bring life to the ship again. however much they might hate it at first. But there was no putting off giving the gist of it to Jane. "It was the blobs," he summarized it. "They seem to be amused by men. They don't require anything from us, but they like us around. Hennessy doesn't know why. They can change our cells, adapt us. Before men came, all life here had twelve legs. Now they're changing that, as we've seen. "And they don't have to be close to do it. We've all been outside the hull. It doesn't show yet—but we're changed. In another month, Earth food would kill us. We've got to stay here. We'll bury the ships deeper this time, and Earth won't find us. They can't risk trying a colony where three ships vanish, so we'll just disappear. And they'll never know." Nobody would know. Their children—odd children who matured in eight years—would be primitive savages in three generations. The Earth tools would be useless, impossible for the hands so radically changed. Nothing from the ship would last. Books could never be read by the new "No," he admitted. Damn his voice! He'd never been good at lying. "No. They have to touch us. I've been touched, but the rest could go back." She nodded. He waited for the condemnation, but there was only puzzlement in her face. "Why?" It was the only thing they could do. Earth needed a place to plant her seed, but no world other than Earth could ever be trusted to preserve that seed for generation after generation. Some worlds already were becoming uncertain. Here, though, the blobs had adapted men to the alien world instead of to civilization. The gadgets would be lost for a time. But perhaps some of the attitudes of civilized man would remain to make the next fruitful," she whispered. "Be fruitful and spawn and replenish an earth." "No," he told her. "Replenish the stars." But she was no longer listening, and that part of his idea could wait. again, looking for other worlds. With the blobs to help them, they through all space, and the changing bodies would claim worlds beyond numbering. Some day, the whole universe would be a spawning ground for the

<question>:
What is the power of the blobs?

<options>:
A To make creatures sleep.
B To change creatures to adapt to a new environment.
C To change creatures so they go insane.
D To make creatures die.

<answer>:

B