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)
B is going to be your answer
option d. is the right option
Answer:
B. the passage of time.
Explanation:
Price elasticity of supply measures how sensitive quantity supplied are to changes in price.
Price elasticity of supply is determined by the passage of time.
Typically, in the short run, the elasticity of supply is usually inelastic. Prices do not usually impact quantity supplied because in the short run, some of the factors of production are fixed. But in the long run, the price elasticity of supply are more elastic.
The other factors listed above in the options affect the price elasticity of demand.