Which option is a common fixture control method that mimics that of TV or VCR units?

The option that represents a common fixture control method mimicking that of TV or VCR units is remote control. This method allows users to operate a variety of electrical fixtures from a distance, similar to how a remote control functions for television or VCR systems.

Remote controls typically utilize infrared or radio frequency signals to communicate with the device being controlled, enabling the user to turn lights on or off, adjust brightness levels, and manage different settings conveniently without needing to be physically present at the switch. This convenience and ease of use align closely with the functionality offered by remote controls in audio-visual equipment.

Other methods mentioned, such as sequential switches, smartphone apps, and wireless receivers, while they have their own applications in controlling fixtures, do not directly replicate the simplicity and familiar operation associated with traditional remote controls for TV and VCR units. Sequential switches often involve a more complex interaction, and smartphone apps or wireless receivers may require additional setup or different interfaces that do not align with the straightforward operation that one typically expects from a remote control.