………………………………. mirror is used as a driver's mirror.

Explanation

To answer the question, "…………………. mirror is used as a driver's mirror," we need to determine which type of mirror is typically used for this purpose.

### Step-by-Step Solution:

1. **Understanding the Purpose of the Driver's Mirror**:
- A driver's mirror is used to help the driver see the vehicles and objects behind them while driving. It needs to provide a wide field of view.

**Hint**: Consider what features are important for a mirror that helps a driver see behind them.
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