Consumer Surplus in Supply-Demand Graph

Steps:

• Identify the demand curve, which shows willingness to pay for tickets.
• Note the equilibrium price of $50 where all tickets sold, intersecting supply and demand.
• Consumer surplus measures total benefit above the paid price.
• Locate the triangular area below demand curve, above $50 line, from zero to quantity sold.

Why C is correct:

• C represents the area between the demand curve and the $50 price line up to equilibrium quantity, per the definition of consumer surplus as (maximum willingness to pay - actual price) × quantity.

Why the others are wrong:

• A: This is producer surplus, the area above supply curve and below price line.
• B: This shows total surplus, combining consumer and producer areas.
• D: This indicates deadweight loss, absent since all tickets sold at equilibrium.

Final answer: C