Final answer:
The hips are 'inferior' or 'caudal' to the shoulders, meaning they are positioned lower down on the body. The correct option is A.
Step-by-step explanation:
The hips are inferior, or below, to the shoulders. In anatomical terms, inferior or caudal describes a position that is lower than another part of the body.
Therefore, the correct answer to fill in the blank is caudal. This term signifies that the hips are situated nearer to the lower part of the body, close to the tail end in the case of organisms with tails, or the coccyx in humans.
Therefore, the correct option is A.