 Which is the best description of the relationship between the Doc and the captain?
Food, on the other hand, is a challenge shipmen face three times a day, so central to their thoughts that a history of sea-faring can be read from a commissary list. Should any groundsman dispute the importance of belly-furniture in history—whether it be exterminating whales, or introducing syphilis to the Fiji Islanders, or settling the Australian littoral with cross-coves from Middlesex and Hampshire—he is referred to the hundred-and-first chapter of Moby Dick , a book spooled in the amusement tanks of all but the smallest spacers. The Ship's Cook, the man who accomplishes the daily miracle of turning offal into eatables, is in many ways the most vital man aboard a spacer. Ship's Surgeon was myself, Paul Vilanova. Cooking aboard a spacer is a job combining the more frustrating tensions of biochemistry, applied mycology, high-speed farming, dietetics and sewage engineering. It's the Cook's responsibility to see that each man aboard gets each day no less than five pounds of water, two pounds of oxygen, and one-and-a-half pounds of dry food. This isn't just a paragraph from the Spacer Union Contract. Though I'm signed aboard as Ship's Surgeon, I seldom lift a knife in space. Generally the man aboard who'd serve as the most popular murder-victim is the Cook. This trip, the-man-you-love-to-hate was our Captain.
 The Doc respects the captain's position but say something if he thinks he goes too far
 They are old friends and the Doc is happy to let poor behavior slide  The Doc respects the captain's position but say something if he thinks he goes too far  The Doc never puts up with the captain, which makes their relationship very tense  The Doc is the official mediator between the captian and the rest of the crew