Final answer:
Brenda's adeptness at producing a constant product quantity with fewer personnel showcases her efficiency, which aligns with the concept of economies of scale leading to reduced costs per unit with increased output.
Step-by-step explanation:
Brenda's ability to produce the same amount of product with fewer personnel is a reflection of her efficiency. Efficiency is concerned with how well resources, such as labor, are used to achieve a goal or outcome. In the context of a business setting, greater efficiency is often demonstrated by the ability to produce a consistent output with reduced input, which in Brenda's case refers to fewer employees needed for the same production levels. This concept is closely associated with the idea of economies of scale, where the cost per unit goes down as the quantity of output goes up, allowing a larger factory to produce at a lower average cost than a smaller factory.