Which term describes a device that allows electrical connectivity in outlets?

The term that describes a device allowing electrical connectivity in outlets is indeed "Socket electrical." A socket electrical serves as the interface where electrical devices can be connected to the mains electricity supply. This device typically has multiple connection points, ensuring that various electrical plugs can fit and connect to it securely, allowing the flow of electricity needed to power appliances.

The term emphasizes the electrical aspect specifically; sockets are designed to accommodate plugs, facilitating not just a physical connection but also the conduction of electrical current. This makes them essential components in electrical systems within homes and buildings.

The other options do not accurately represent the function of an electrical outlet connector. "Socket mechanical" relates more to physical connections that may not involve electricity, like those in certain mechanical systems. "Sling" refers to a type of support or lifting device, which is unrelated to electrical connections, and "Spacer" is a term used for objects that maintain a distance between components, typically in construction or mechanical contexts, but does not pertain to electrical connectivity.