Answer:
(E) the quantity supplied of electric ranges would increase.
Explanation:
The law of supply, as the name indicates, only considers the effects of changes in price on supply. Therefore answers B, C and D shouldn't be considered at all.
As the price of electric ranges has increased, there is a bigger incentive for suppliers to increase their output. The term 'ceteris parabis' is important here as other factors can influence supply as well, so we need to know that nothing else has changed. Suppliers now have increased profits so they will produce more units to maximise their profits.
