Household production consists of households producing goods and services, like meals, cleaning and child care, instead of firms

The price of pizza has declined. This will cause the curve for pizza to:

a. Shift leftward to show a decrease in the demand for pizza. b. Shift rightward to show an increase the demand for pizza. c. No shift will take place because the quantity demanded of pizza will not change. d. No shift will take place only a movement along the curve to demonstrate the increase in the quantity demanded of pizza.

John is trying to decide how to divide his time between his job as a stocker in the local grocery store, which pays $7 per hour for as many hours as he chooses to work, and cleaning windows for the businesses downtown. He makes $2 for every window he cleans. John is indifferent between the two tasks, and the number of windows he can clean depends on how many hours he spends cleaning in a day, as shown in the accompanying table.Time cleaning windows (hours/day)Total number of windows cleaned0017211314416517 If we plot John's opportunity cost per window on the vertical axis and the number of windows cleaned each day on the horizontal axis, we will have John's ________ curve for window-cleaning services.

A. supply B. production possibilities C. benefit D. demand