Concept:
Communication modes are generally classified based on how many transmitters and receivers are involved in a single session.
• Point-to-Point: Communication takes place between a single transmitter and a single receiver over a dedicated link.
• Broadcast: A single transmitter sends information to a large number of receivers simultaneously.
Step 1: Examine the transmission modes for various services.
Television (B), FM radio (C), and AM radio (D) are classic examples of broadcasting. In these cases, a central station transmits signals that can be picked up by any receiver within range.
Step 2: Identify the dedicated link.
In Fax transmission, one specific device communicates directly with another specific device using a dedicated connection (typically a telephone line). Since the message is intended for and received by only one specific recipient, it is a point-to-point communication mode.