Fire produced by oil cannot be controlled by ________ _.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about a method that cannot be used to control fire produced by oil.

2. **Identifying the Common Method**: One common method to control fires is by using water. However, we need to determine if this method is effective for oil fires.

3. **Analyzing the Properties of Water and Oil**:
- Water has a higher density than oil. This means that when water is poured onto burning oil, it will sink below the oil instead of extinguishing the flames.
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