The process of increasing the strength of a signal using an electronic circuit is called.

Options

A. amplification
B. modulation
C. demodulation
D. transmission

Answer

To solve the question, "The process of increasing the strength of a signal using an electronic circuit is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**: The question provides four terms: amplification, modulation, demodulation, and transmission. We need to analyze each term to find the one that fits the definition given in the question.

2. **Defining Amplification**: Amplification refers to the process of increasing the strength or amplitude of a signal. This is typically done using an electronic circuit known as an amplifier.

3. **Identifying the Role of an Amplifier**: An amplifier is an electronic device that takes a weak input signal and increases its strength. This is crucial in communication systems to ensure that signals can be transmitted over long distances without losing quality.

4. **Considering the Other Terms**:
- **Modulation**: This is the process of varying a carrier signal in order to transmit information.
- **Demodulation**: This is the reverse process of modulation, where the original information is extracted from the modulated carrier signal.
- **Transmission**: This refers to the act of sending the signal from one point to another.

5. **Conclusion**: Since the question specifically asks for the process of increasing the strength of a signal, the correct answer is **amplification**.

### Final Answer:
The process of increasing the strength of a signal using an electronic circuit is called **amplification**.

---