What does an extension cord primarily extend?

An extension cord primarily extends the electrical outlet, allowing devices that may not be in close proximity to a power source to be connected and powered effectively. The primary function of an extension cord is to provide a means to deliver electrical power from a wall outlet to a device that requires electricity, overcoming the limitation of distance that typical power cords have.

When an extension cord is used, it provides the necessary connectivity to an electrical outlet that might be too far from the device needing power, facilitating greater flexibility in placement and use of electrical equipment.

Considering the other options, while an extension cord does indeed allow for the connection of multiple devices (often through the outlet it connects to), its main role revolves around extending access to electricity where standard cords may not reach. This makes the correct understanding of the purpose of extension cords critical for safe and effective electrical setups in settings like theaters, concerts, and other performance venues.