Question

complete the analogy.
sprain is to injury as stomach is to
digestion
belly
organ

Explanation:

A sprain is a type of injury (a specific instance of a broader category). Now, we analyze the relationship for "stomach": digestion is a process the stomach is involved in, not a category it belongs to; "belly" is a synonym or a more colloquial term for the area, not a category. The stomach is a type of organ (a specific instance of the broader category of organs), just as a sprain is a type of injury.

Answer:

organ