Which of the following built-in appliances can be connected using a cord and plug in a dwelling?

The correct choice highlights the built-in appliances that can indeed be connected using a cord and plug within a dwelling. Typically, appliances like dishwashers, garbage disposals, and trash compactors are designed to be hardwired into the electrical system of a home, but they can also be equipped with cords and plugs for easier installation and replacement.

In the case of dishwashers, it's common to have them connected to a standard outlet, allowing for flexibility in kitchen design. For garbage disposals and trash compactors, while they can also be hardwired, many models come with the option to use a plug for convenience, particularly in existing kitchens where wiring may not be updated.

Other choices include appliances less commonly connected with cords and plugs. For instance, washers and dryers typically require dedicated circuits and may not always be compatible with a standard plug system. Additionally, appliances like microwaves, ovens, and freezers generally have different installation requirements, often necessitating hardwiring for safety and performance reasons. Refrigerators and electric stoves, while sometimes capable of using plugs, also frequently require special considerations and wiring setups. Thus, the first option represents appliances that are designed with the option for cord and plug connections more consistently than those in the other selections.