What is a primary benefit of using frequency division multiplexing in communications?

Using frequency division multiplexing (FDM) offers the primary benefit of efficiency in utilizing bandwidth. FDM allows multiple signals to be transmitted simultaneously over a single communication channel by allocating a unique frequency band to each signal. This means that the available bandwidth can be used more effectively, as multiple communications can occur at the same time without interfering with each other. Each signal occupies a different frequency range, enabling the system to maximize the capacity of the communication channel. This efficient use of bandwidth is particularly crucial in environments where bandwidth is a limited resource, allowing more data to be transmitted without requiring additional physical connections.

In contrast, while increased range of communication, decreased signal clarity, and better security for data transmission might be benefits of other systems or technologies, they do not directly relate to the fundamental operational advantages provided by frequency division multiplexing.