Answer:
The answer is option A : 4 gallons.
Step-by-step explanation:
A recipe for 10 servings of raspberry sorbet calls for 2 cups of water, 1/1.2 cups of granulated sugar, and 4 cups of frozen raspberries.
Now 10 servings need = 2 cups of water.
And 320 servings will need = cups of water.
Now, 1 cup = 0.0625 gallons
So, 64 cups are = gallons
Therefore, answer is option A : 4 gallons.