Which of the following is NOT a type of light switch?

The correct choice identifies a type that does not typically represent a common light switch configuration used in residential and commercial wiring.

Single-pole, three-way, and dimmer switches are standard types:

• A single-pole switch controls a light fixture from one location.

• A three-way switch allows you to control a fixture from two different locations, commonly used in long hallways or staircases.

• A dimmer switch, as the name suggests, adjusts the brightness of light fixtures, providing flexibility in lighting settings.

In contrast, "multi-contact" is not a recognized category of light switch. While the term could refer to switches with multiple terminals or functions in specialized applications, it doesn't denote a standard switch type typically encountered in typical wiring practices. Hence, identifying it as NOT a type of light switch clarifies the understanding of common switch configurations in construction wiring.