What kind of defect is associated with an appliance that cannot fully complete its function?

The correct choice describes a situation where an appliance that cannot fully complete its intended function can be classified under a 'material defect.' A material defect refers to a significant flaw that affects the overall use, value, or functionality of an item, such as an appliance. If the appliance fails to perform its primary duty, this underlines a substantial issue with the item’s material or construction that directly hinders its effectiveness.

In this context, distinguishing between the options is essential. A material fact relates to information that could influence a buyer's decision but does not directly pertain to the physical condition of an appliance. A defective condition is more commonly used to describe the state of being faulty but does not specifically indicate the degree or impact of that fault, making it less precise. A minor defect suggests an inconsequential flaw that typically does not affect the overall function or value, which does not apply to the situation where the appliance cannot fulfill its basic function. Therefore, identifying a 'material defect' aligns clearly with the scenario presented in the question.