Step 1: Understanding the Concept:
This question is from the story "A Triumph of Surgery" and asks about a specific detail of the dog Tricki's treatment.
Step 2: Detailed Explanation:
In the story, the veterinary surgeon, Mr. Herriot, takes the overfed dog Tricki to his surgery. For the first two days, he gives Tricki no food but plenty of water. This was part of the treatment to help the dog recover from his illness caused by overindulgence. On the third day, Tricki starts to show interest in his surroundings and begins his recovery.
Step 3: Final Answer:
Tricki was given no food for two days. The correct option is (C).