The correct option is D). drop in the price of iPads.
An increase in price leads to an increase in the quantity supplied of that good or service, while a decrease in price will decrease the quantity supplied.
The supply curve will move from left to the right, as the price of the commodity increases and the quantity supplied also increases.
Therefore, a decrease in the quantity supplied of iPads is caused by drop in the price of iPads.
Learn more about the decrease in the quantity supplied here:-
https://brainly.com/question/13503048
#SPJ1