Answer:
![\boxed{Grape}](https://img.qammunity.org/2021/formulas/mathematics/high-school/3ym693ntpksnuirj2n75gbmxa7ictp0mwj.png)
Explanation:
Grape to water = 1:3
Multiplying both sides by 4
=> Grape to water = 4:12
Cherry to water = 5:12
Lemon to water = 7:12
Orange to water = 2:3
(Multiplying both sides by 4)
=> Orange to water = 8:12
So, Grape has the smallest ratio of mix to water i.e. 4:12