input: Text: SEA LEGS By FRANK QUATTROCCHI Illustrated by EMSH Rootless and footloose, a man in space can't help but dream of coming home. But something nobody should do is bet on the validity of a homesick dream! Flight Officer Robert Craig surrendered the tube containing his service record tapes and stood waiting while the bored process clerk examined the seal. "Your clearance," said the clerk. Craig handed him a battered punch card and watched the man insert it in the reproducer. He felt anxiety as the much-handled card refused for a time to match the instrument's metal contact points. The line of men behind Craig fidgeted. "You got to get this punched by Territorial," said the clerk. "Take it back to your unit's clearance office." "Look again, Sergeant," Craig said, repressing his irritation. "It ain't notched." "The hell it isn't." The man examined the card with squinting care and nodded finally. "It's so damn notched," he complained. "You ought to take care of that card; can't get on without one." Craig hesitated before moving. "Next," said the clerk, "What you waiting for?" "Don't I take my 201 file?" "We send it on ahead. Go to Grav 1 desk." A murmur greeted the order. Craig experienced the thrill of knowing the envy of the others. Grav 1—that meant Terra. He crossed the long, dreary room, knowing the eyes of the other men were upon him. "Your service tapes," the next noncom said. "Where you going?" "Grav 1—Terra," fumbled Craig. "Los Angeles." "Los Angeles, eh? Where in Los Angeles?" "I—I—" Craig muttered, fumbling in his pockets. "No specific destination," supplied the man as he pun
  Question: What is the purpose of paraoxynebutal?
  
   (A) It relaxes the sympathetic nervous system
   (B) It puts a human to sleep for up to 12 days
   (C) It helps people adjust to changes in gravity
   (D) It opens the airways to allow for easier breathing
  Answer:
output: It helps people adjust to changes in gravity