To find the cost of 1 quart of ice cream, we first need to determine the cost per gallon and then convert that to quarts.
1 gallon is equal to 4 quarts.
First, we calculate the cost per gallon: \[ \text{Cost per gallon} = \frac{\text{Total cost}}{\text{Number of gallons}} = \frac{37.20}{12} = 3.10 \]
Now, we find the cost per quart: \[ \text{Cost per quart} = \frac{\text{Cost per gallon}}{4} = \frac{3.10}{4} = 0.775 \]
Thus, the cost per quart is $0.775.
Rounding this value, the closest options are:
- $0.68
- $0.78
- $3.10
- $4.10
The closest option to $0.775 is $0.78.
Therefore, the answer is $0.78.