Explanation

The question highlights over-flooding as a significant issue facing the country, and the selected answer, C) "Very few problems in our country are as bad as over-flooding," effectively reinforces this perception. This option implies that while there may be other problems, over-flooding stands out as particularly severe, suggesting a general consensus on its severity.

Option A, "Over-flooding is worse than any other problem," is an absolute statement that eliminates the possibility of any other problems being equally severe, which may not capture the complexity of the issue. Option B similarly suggests a singular worst problem without acknowledging the presence of other significant challenges. Option D, "Over-flooding is a very problem in our country," contains a grammatical error and fails to convey the gravity of the situation effectively.

In contrast, option C allows for the acknowledgment of other problems while prioritizing over-flooding as one that is very serious compared to most. This nuanced approach aligns with the prompt's intent of highlighting over-flooding as a major concern while recognizing the existing landscape of issues in the country, making it the most appropriate choice.