Answer:

A fax machine is a device that is used to send and receive copies of printed or written matter over telephone lines. It converts the information into electronic signals that can be transmitted and then reconverted back into a printed form at the receiving end. The correct answer to the given question is option 'C' - send and receive copies of printed or written matter.

Explanation:

What is a fax machine?
- A fax machine, also known as a facsimile machine, is a device that is used to send and receive documents electronically over telephone lines.
- It allows for the transmission of copies of printed or written matter, such as documents, letters, drawings, or photographs.

How does a fax machine work?
- A fax machine works by scanning the document that needs to be transmitted.
- The document is converted into a digital image, which is then sent over telephone lines.
- At the receiving end, the fax machine receives the digital image and prints out a copy of the document.

Advantages of using a fax machine:
- Quick and convenient: Fax machines allow for the quick and easy transmission of documents over long distances.
- Reliable: Fax machines provide a reliable means of communication, ensuring that the document is received in its original form.
- Cost-effective: Sending a fax is often more cost-effective than mailing a physical copy of a document.

Uses of a fax machine:
- Business communication: Fax machines are commonly used in offices and businesses to send and receive important documents, such as contracts, invoices, and purchase orders.
- Legal documents: Fax machines are often used in the legal profession to transmit legal documents, such as court pleadings or agreements.
- Healthcare industry: Fax machines are utilized in the healthcare industry to transmit patient records, medical reports, and prescriptions.
- Personal use: Fax machines can also be used for personal purposes, such as sending signed documents or important letters.

In conclusion, a fax machine is a device that is primarily used to send and receive copies of printed or written matter over telephone lines. It provides a quick, convenient, and reliable means of communication, making it an essential tool in many industries and personal settings.