Oral hygiene: ________ :: Sewage disposal : Community hygiene

Answer

To solve the analogy question "Oral hygiene: ________ :: Sewage disposal : Community hygiene," we need to identify the relationship between the first pair of terms and apply it to find the missing term.

### Step-by-Step Solution:

1. **Understand the Terms**:
- Oral hygiene refers to the practices that maintain the health of the mouth, teeth, and gums.
- Sewage disposal refers to the methods used to manage and dispose of waste in a community.

2. **Identify the Relationship**:
- The relationship between "Sewage disposal" and "Community hygiene" is that sewage disposal is a practice that contributes to community hygiene.

3. **Find the Corresponding Concept for Oral Hygiene**:
- Oral hygiene is a practice that contributes to personal hygiene.

4. **Complete the Analogy**:
- Therefore, the missing term that corresponds to "Oral hygiene" in the analogy is "Personal hygiene."

5. **Final Answer**:
- Oral hygiene: Personal hygiene :: Sewage disposal : Community hygiene.