A company is developing a television network to broadcast local news content using analog signals. Which multiplexing technique should be used?

Frequency Division Multiplexing (FDM) is the correct choice for a television network broadcasting local news content using analog signals. FDM works by dividing the available bandwidth into multiple frequency channels, each designated for a separate signal. This allows for several channels of information to be transmitted simultaneously over a communication medium, which is ideal for analog signal transmission such as television broadcasting.

In the context of broadcasting, analog television signals operate within specific frequency ranges. By using FDM, the local news content can be transmitted in its own frequency slot, ensuring effective differentiation between various channels and preventing interference. This technique is widely used in terrestrial television broadcasting as it efficiently utilizes the available spectrum.

In contrast, the other options provided are suited for different types of communication systems. Time-division multiplexing, for instance, divides time into segments for each signal, which is more commonly used in digital communications rather than analog. Code Division Multiple Access relies on unique codes to differentiate between users in wireless communications, which is not applicable for traditional television broadcasting. Wavelength Division Multiplexing is used in fiber-optic communications, where multiple light wavelengths carry different data streams, but it is not suitable for analog television signals. Thus, FDM is the ideal choice for the scenario described.