The 'Facsimile Transmission (FAX)' involves

Options

A. Speech communication
B. Telegraphy
C. Exact reproduction of a document or static picture
D. Taking photograph

Answer

### Step-by-Step Solution:

1. **Understanding Facsimile Transmission (FAX)**:
- Facsimile transmission, commonly known as FAX, is a method of transmitting printed material over a distance. It allows for the sending of documents and images via telephone lines or radio waves.

2. **Definition of FAX**:
- FAX is often referred to as telecopy or tele-fax. It involves the scanning of printed documents and transmitting them to a receiving machine, which then reproduces the document.

3. **Process of FAX**:
- The process begins with a FAX machine scanning the document. The scanned image is converted into a digital signal.
- This digital signal is then transmitted over telephone lines or through radio waves to the receiving FAX machine.

4. **Reproduction of Documents**:
- Upon receiving the digital signal, the receiving FAX machine decodes the signal and reproduces the original document on paper.
- This process can also be used for static pictures, making FAX a versatile tool for document transmission.

5. **Conclusion**:
- Therefore, the main function of facsimile transmission (FAX) is the reproduction of documents or static pictures through telephonic transmission.

### Final Answer:
The 'Facsimile Transmission (FAX)' involves the reproduction of documents or static pictures through telephonic transmission.

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