Aggregate demand includes a. only the quantity of goods and services households want to buy. b. only the quantity of goods and services households and firms want to buy. c. only the quantity of goods and services households, firms, and the government want to buy. d. the quantity of goods and services households, firms, the government, and customer abroad want to buy.

Suppose farmer lane grows and sells cotton in a perfectly competitive industry. the market price of cotton is $1.64 per kilogram, and his marginal cost of production is $1.44 per kilogram, which increases with output. assume farmer lane is currently earning a profit. can farmer lane do anything to increase his profit in the short run? farmer lane: a. cannot do anything to increase his profit. b. may or may not be able to increase his profit. c. can increase his profit by raising his price. d. can increase his profit by producing more output. e. can increase his profit by shutting down.