The 'Facsimile Transmission (FAX)' involves

Options

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

Answer

To solve the question regarding 'Facsimile Transmission (FAX)', we will analyze the options provided and determine which one accurately describes what FAX involves.

### Step 1: Understand the concept of Facsimile Transmission (FAX)
Facsimile Transmission, commonly known as FAX, is a technology used to send copies of documents or images over a telephone line. It scans the document, converts it into a digital signal, and transmits it to another FAX machine, which then reproduces the document.

### Step 2: Evaluate the options
1. **Option 1: Speech Communication** - FAX does not involve speech communication. It is focused on transmitting documents, not voice.

2. **Option 2: Telegraphy** - While both FAX and telegraphy are forms of communication, telegraphy primarily deals with sending text messages using Morse code or similar methods, not document reproduction.

3. **Option 3: Exact Reproduction of a document or static picture** - This option accurately describes FAX. It is designed to reproduce documents and images exactly as they are.

4. **Option 4: Taking photograph** - FAX does not involve taking photographs. It transmits already existing documents or images rather than capturing new ones.

### Step 3: Conclusion
After evaluating all the options, the correct answer is **Option 3: Exact Reproduction of a document or static picture**. This is the primary function of a FAX machine.

### Final Answer
The 'Facsimile Transmission (FAX)' involves the exact reproduction of a document or static picture.

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