Multiplexing is a form of combining several _____ into one high-capacity channel.

Multiplexing is a technique used in telecommunications to combine multiple low-capacity channels into a single high-capacity channel. This process allows efficient use of the available bandwidth by maximizing the amount of data that can be transmitted over a communication medium simultaneously. The key concept behind multiplexing is that it takes advantage of the unused capacity of the individual low-capacity channels to create a more efficient system for transmitting data.

By utilizing multiplexing, systems can optimize the use of their infrastructure and provide better service, particularly in scenarios with limited resources. Low-capacity channels often refer to communication links like individual phone lines or basic data connections, where each one has a limited amount of data bandwidth. By pooling together these individual channels, multiplexing creates a robust high-capacity channel that can support higher data rates, integrating multiple signals effectively.

In contrast, the other options do not accurately represent the nature of channels being combined in multiplexing. High-capacity channels are already capable of transmitting large amounts of data, medium-capacity channels are not specifically defined in the context of multiplexing, and single-capacity channels indicate a lack of combination altogether, contradicting the multiplexing concept. Thus, the correct understanding of multiplexing pertains to its role in merging several low-capacity channels