A wall-mounted luminaire that weighs 4 pounds is permitted to be mounted to and supported by:

A wall-mounted luminaire that weighs 4 pounds can indeed be mounted to and supported by any of the options provided, making the most inclusive choice the correct one.

For a typical installation, a ceiling fan box is designed to support not only fans but also light fixtures, ensuring they can handle the weight and stresses involved. Junction boxes that are rated for lighting, especially those designed to support fixtures, must adhere to specific weight capacity regulations set by the National Electrical Code (NEC). A standard junction box, if properly rated for the weight of the luminaire, can safely support it as well.

Additionally, there are mountings that require special brackets, which are specifically designed for securing heavier fixtures. These brackets enhance the stability and strength of the mount, accommodating various installation needs.

In summary, a 4-pound wall-mounted luminaire is within the allowable weight range for all three types of supports, provided they are installed according to the relevant electrical codes and standards, which makes "any of these" the most accurate response.