Name the device which is used to 'make' or 'break' an electric circuit.

Options

A. fuse
B. wire
C. switch
D. bulb

Answer

To answer the question "Name the device which is used to 'make' or 'break' an electric circuit," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The term "make" refers to closing the circuit, which allows electric current to flow.
- The term "break" refers to opening the circuit, which stops the flow of electric current.

2. **Identifying the Device**:
- The device that can either close (make) or open (break) an electric circuit is commonly used in electrical systems.

3. **Naming the Device**:
- The device that serves this purpose is called a **switch**.

4. **Function of the Switch**:
- When the switch is in the "off" position, it breaks the circuit, preventing current from flowing.
- When the switch is in the "on" position, it completes the circuit, allowing current to flow.

5. **Conclusion**:
- Therefore, the answer to the question is that the device used to 'make' or 'break' an electric circuit is a **switch**.