Final Answer:
A universal joint is a(n) D) Swivel that lets a socket wrench reach around obstructions.
Step-by-step explanation:
A universal joint, commonly known as a U-joint or Cardan joint, is a mechanical component that provides flexibility in transmitting rotational motion between two shafts.
In the context of a socket wrench, a universal joint serves as a swivel (option D) that allows the wrench to maneuver around obstacles and reach fasteners in confined or hard-to-reach spaces. This flexibility is crucial for mechanics and individuals working in various industries where accessing bolts or nuts in tight spaces is a common challenge.
Options A, B, and C—Extension, Adapter, and Connector—represent different components used with socket wrenches, but they do not specifically describe the function of a universal joint. An extension is a lengthening tool, an adapter changes the size or type of the drive, and a connector links two components, but none of these provide the swiveling capability that a universal joint does.
Understanding the purpose and functionality of tools and components in mechanical applications is essential for efficient and effective work. The use of a universal joint enhances the versatility of a socket wrench, allowing for increased flexibility and adaptability in various work settings. This makes it a valuable tool for professionals in fields such as automotive repair, construction, and machinery maintenance.