Crimpers are tools primarily used to attach connectors to cables.

• A. Networking devices and tools
• B. Cable testers
• C. Peripheral devices
• D. Crimpers

Answer: (D)

Crimping is the process of securing a connector to the end of a cable by deforming the connector's metal barrel around the conductor with a crimping tool. The tool labeled crimpers is the best fit because it specifically performs that termination step, creating a solid electrical connection and mechanical grip between the wire and the connector. Other items listed don’t describe this action: networking devices and tools cover equipment used for building or managing networks, cable testers check for continuity or faults in a cable, and peripheral devices are things that connect to a computer; none focus on attaching connectors to cables.