input: Text: <unk>!-- $Id: header.txt 236 2009-12-07 18:57:00Z vlsimpson $ --> PLANET of DREAD By MURRAY LEINSTER Illustrator ADKINS I. Moran cut apart the yard-long monstrosity with a slash of flame. The thing presumably died, but it continued to writhe senselessly. He turned to see other horrors crawling toward him. Then he knew he was being marooned on a planet of endless terrors. Moran, naturally, did not mean to help in the carrying out of the plans which would mean his destruction one way or another. The plans were thrashed out very painstakingly, in formal conference on the space-yacht Nadine, with Moran present and allowed to take part in the discussion. From the viewpoint of the Nadine's ship's company, it was simply necessary to get rid of Moran. In their predicament he might have come to the same conclusion; but he was not at all enthusiastic about their decision. He would die of it. The Nadine was out of overdrive and all the uncountable suns of the galaxy shone steadily, remotely, as infinitesimal specks of light of every color of the rainbow. Two hours since, the sun of this solar system had been a vast glaring disk off to port, with streamers and prominences erupting about its edges. Now it lay astern, and Moran could see the planet that had been chosen for his marooning. It was a cloudy world. There were some dim markings near one lighted limb, but nowhere else. There was an ice-cap in view. The rest was—clouds
  Question: Why have humans been carrying beetles around the galaxy?
  
   (A) Beetles are just one piece of the puzzle to create an ecological system capable of supporting human life.
   (B) Beetles are a good source of protein for new planet settlers.
   (C) Beetles, like other pests, always seem to make their way on board spaceships.
   (D) Beetles are an integral part of a spaceship's waste management system.
  Answer:
output: Beetles are just one piece of the puzzle to create an ecological system capable of supporting human life.