a. marginal product is falling.b. marginal product is rising.c. marginal product is negative.d. one cannot determine whethermarginal product is falling or rising.

b. The price of good 1 decreased.

c. perfectly inelastic.

b. The consumer prefers C to A.

a. marginal product is falling.b. marginal product is rising.c. marginal product is negative.d. one cannot determine whethermarginal product is falling or rising.

a. an increase in the quantity of Y demanded.b. a decrease in the quantity of Y demanded.c. a leftward shift in the demand curve for Y.d.a rightward shift in the demand curve for Y.

a. 0.25, and demand is inelastic.b. 1.5, and demand is elastic.c. 1, and demand is unit elastic.d. 0.67, and demand is inelastic.

a. the consumer's purchase of good 2 decreases even though its price stays constant.b. the slope of the budget line decreases because the price of good 1 increased.c. the marginal utility of good 1 increases and the marginal utility of good 2 decreases.d. the consumer's total utility decreases.