Answer;
C. 4 :1
Step-by-step explanation;
-A gallon is a unit of measurement that is larger than a quart, pint, and cup.
-Four quarts are equal to 1 gallon. Since there are 2 pints in a quart, there are 8 pints in a gallon and also Since there are 2 cups to a pint, there are 16 cups in a gallon. There are four cups in a quart, and thus the ratio of cups to quarts in a carton of milk is 4:1.