Of the following, which is most likely to be a normal good?

The value of the marginal product of labor is equal to the change in

a. marginal cost caused by the addition of the last worker. b. total cost caused by the addition of the last worker. c. total revenue caused by the addition of the last worker. d. total profit caused by the addition of the last worker.

Which of the following would likely increase private saving?

a. both expansion of means testing and a consumption tax b. expansion of means testing, but not a consumption tax c. a consumption tax, but not expansion of means testing d. neither expansion of means testing nor a consumption tax