a. As price rises, sellers want to sell 40 instead of 30 of the good. b. Better technology has caused the quantity supplied to increase from 30 to 40. c. The diagram shows a Change in Price. d. The increase in quantity supplied because price of a good has risen follows the Law of Supply. e. The increase in quantity supplied from 30 to 40 is due to a shift of the Supply Curve. f. The diagram shows change in some other factors but not Price