For which application are twisted pair cables primarily used?

Twisted pair cables are primarily used for data communication due to their design and characteristics. These cables consist of pairs of insulated copper wires that are twisted together, which helps to reduce electromagnetic interference that can affect data transmission. This design allows for effective transmission of signals and is widely utilized in networking applications, such as telephone lines and local area networks (LANs).

The capability to carry different types of data signals, including digital and analog, makes twisted pair cables a staple in the field of data communication. Furthermore, standards such as Category 5e, Category 6, and Category 6a have been developed for networking applications, enabling high-speed data transfer and efficient networking solutions. This extensive use in data communication makes it clear why this option is the most relevant for twisted pair cables.