The equilibrium price of a pair of running shoes is 90.00 and the equilibrium quantity is 700 pairs a week. 900 80.00 800 90.00 700 100.00 600 At the original equilibrium price, a __ occurs. To return to equilibrium, the price of a pair of running shoes __ A. shortage; rises B. surplus; rises C. shortage; falls D. surplus; falls

The correct answer is D. surplus; falls.<br /><br />Explanation:<br />At the original equilibrium price of $90.00, the equilibrium quantity is 700 pairs per week. If the price is higher than the equilibrium price, such as $100.00, the quantity demanded will be less than the equilibrium quantity, resulting in a surplus. To return to equilibrium, the price of a pair of running shoes needs to fall.