Answer:
classical or scientific
Explanation:
Classical or scientific management was developed by Frederick Taylor, Max Weber and Henri Fayol. It focused on material needs. Companies needed to improve profits by improving productivity and efficiency, while workers were supposed to be only motivated by the salary that they could earn. This theory has a lot of flaws, but you must remember that it was developed more than 100 years ago.
Usually D.) Focus Group
They are a small group of people who will review and give feedback on a test product. The other alternative (B, sample audience) is for when the product is usually already in its earl development stage. (Not a prototype)
A) Producing the combination of goods most desired by society