input: Text: Planet of No-Return By WILBUR S. PEACOCK The orders were explicit: "Destroy the 'THING' of Venus." But Patrolmen Kerry Blane and Splinter Wood, their space-ship wrecked, could not follow orders—their weapons were useless on the Water-world. Old Kerry Blane exploded. "Damn it!" he roared. "I don't like you; and I don't like this ship; and I don't like the assignment; and I don't like those infernal pills you keep eating; and I—" "Splinter" Wood grinned. "Seems to me, Kerry," he remarked humorously, "that you don't like much of anything!" Kerry Blane growled unintelligibly, batted the injector lever with a calloused hand. His grizzled hair was a stiff wiry mop on his small head, and his oversize jaw was thrust belligerently forward. But deep within his eyes, where he hoped it was hidden, was a friendly twinkle that gave the lie to his speech. "You're a squirt!" he snapped disagreeably. "You're not dry behind the ears, yet. You're like the rest of these kids who call themselves pilots—only more so! And why the hell the chief had to sic you on me, on an exploration trip this important—well, I'll never understand." Splinter rolled his six foot three of lanky body into a more comfortable position on the air-bunk. He yawned tremendously, fumbled a small box from his shirt pocket, and removed a marble-like capsule. "Better take one of these," he warned. "You're liable to get the space bends at any moment." Old Kerry Blane snorted, bat
  Question: What is the main goal of their trip to Venus?
  
   (A) To find the turtle that lives in Venus's ocean
   (B) To bring home samples of the glowing marine worms
   (C) To exterminate a particular protoplasm that killed another human 
   (D) To observe the interactions between the sea creatures on Venus
  Answer:
output: To exterminate a particular protoplasm that killed another human