Which concept is the economic principle that affects prices?

• A. Sustainability
• B. Supply and Demand
• C. Trend
• D. Purebred

Answer: (B)

Prices are determined by how much buyers want to purchase and how much producers are willing to sell. This interplay is what economists call supply and demand. When demand for beef rises or supply falls, prices tend to go up; when demand falls or supply grows, prices tend to go down. That dynamic sets the market price for livestock and meat.

Sustainability, trends, and being purebred describe qualities or directions that don’t directly set prices in the market. Sustainability is about maintaining resources, trends describe data patterns over time, and purebred refers to genetics. They don’t establish the price the market will bear the way supply and demand do.