Your roommate is interested in using a preservative that will prevent fruits from undergoing a change in color and flavor caused by exposure to oxygen. Which preservative would you recommend?

I would recommend lemon Juice

Explanation:

oxidation is a chemical process that occurs in the presence of oxygen and moisture. this process cause fruits to change in color and have an undesired flavor. hence an anti-oxidant like lemon juice when added to such fruits can prevent their oxidation over a long period of time. lemon juice (ascorbic acid) is a natural antioxidant and find great use in the food and beverage industry for preservation.