Dynamic pricing is best described as a pricing mechanism that

• A. Allows the price to vary with supply and demand (ex: toll lanes, ride sharing, parking meters)
• B. Keeps the price fixed regardless of demand
• C. Is illegal in most markets
• D. Reduces price elasticity

Answer: (A)

Dynamic pricing is a pricing mechanism that adjusts the price based on current supply and demand conditions. Prices rise when demand is high or capacity is scarce and fall when demand is low or more supply is available. This reflects scarcity in real time and helps allocate limited capacity efficiently. Examples like toll lanes charging higher prices during congestion, ride-sharing apps using surge pricing, and parking meters that vary with time of day illustrate how prices move with market conditions to influence usage.

This is the best description because it captures the real-time adjustment and the goal of signaling scarcity to manage demand and utilization. The idea that prices stay fixed regardless of demand misses what dynamic pricing does; the notion that it’s illegal in most markets is inaccurate since many forms of dynamic pricing are widely used and legal; and the claim that it reduces price elasticity mixes up a measure of responsiveness with a pricing rule—the mechanism changes prices, but it doesn’t inherently alter how responsive consumers are to price changes.