Read the passage.Colic in horses is a serious condition. Horses that eat too much or eat food that has spoiled are at risk of being in distress. A veterinarian should be called if colic is suspected. To prevent colic, make sure your horse has plenty of fresh water to drink and monitor its food intake.

The passage introduces a problem: colic can cause serious distress in horses. It then gives ways to respond to or prevent the problem, such as calling a veterinarian and providing fresh water while monitoring food intake. This is problem/solution, choice C.

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