Answer:
The cookie recipe uses the most oil.
Explanation:
In order to solve this problem, you must convert all of these fractions into decimals.
Bread: 2/8 cup = 0.25 cup or 1/4 cup
Cookies: 1/3 cup = 0.33 cup
Cake: 1/5 cup = 0.2 cup
Pie: 1/7 cup = 0.14 cup
Therefore, the cookie recipe uses the most oil.