Answer:
Price falls, output rises
Explanation:
We know that the ethanol is used as an input in the production of gasoline. So, if the price of ethanol is lower then this will reduce the cost of production of gasoline. If the cost of production of ethanol is lower then this will give an incentive to the producers of gasoline to produce more and supply more.
This will shift the supply curve of gasoline rightwards, as a result there is a fall in the equilibrium price level and increase in the equilibrium quantity of gasoline.