 Which is the most accurate description of the planet Stinson finds himself on?
He touched the pencil-line scar behind his ear where the cylinder was buried, marveling at the power stored there, power to fling him from earth to this fourth planet of the Centaurian system in an instant. He was here and Earth was somewhere up there. He was here to investigate, to determine if this planet was capable of supporting life. "My name is Stinson," he said, pointing to himself. "I am Stinson, of the planet Earth." These are the undesirables, the incorrigibles, the nonconformists from the sixth planet. And this is contrary to the greatest law of all—that an entity, once in existence, can never cease to exist." It has to do with what comes after physical existence, not with existence itself.
 Some kind of penal colony
 A haven for amphibious creatures  A research outpost for discovering new species  Some kind of penal colony  An abandoned desert planet that cannot sustain life