Choose the best alternative as the answer-
'A fan always has

Options

A. Switch
B. Blades
C. Current
D. Wire

Answer

To solve the question, we need to determine which component is essential for a fan. Let's analyze the options provided:

1. **Switch**: While a fan typically has a switch to turn it on and off, it is not a mandatory component. Some fans can be operated without a traditional switch, such as those with pull cords or remote controls.

2. **Blade**: The blades are the essential part of a fan. They are necessary for the fan to function and provide airflow. Without blades, a fan cannot fulfill its primary purpose of circulating air.

3. **Grunt**: This term seems to be a typographical error or misinterpretation. It does not refer to any standard component of a fan.

4. **Wire**: Wires are necessary for electrical connections, but similar to the switch, they are not a mandatory component for the fan's operation. Some fans may operate without visible wires, especially in the case of battery-operated or wireless models.

Based on this analysis, the best alternative that a fan always has is:

**Answer**: **Blade** (Option 2)

### Step-by-Step Solution:
1. **Identify the components of a fan**: List out the options provided (switch, blade, grunt, wire).
2. **Analyze each component**:
- **Switch**: Not essential for all fans.
- **Blade**: Essential for the fan to function.
- **Grunt**: Not a recognized component.
- **Wire**: Not essential for all fans.
3. **Determine the mandatory component**: Conclude that blades are necessary for a fan to operate.
4. **Select the best alternative**: Choose "Blade" as the correct answer.