Answer:
3-liter juice bottle
Step-by-step explanation:
To compare the container we need to have the same units.
We need to know that 1 gallon is equal to 3.785 liters, so half gallon is equal to:

Now, we have 1.89 liters of milk and 3 liters of juice. Since 3 is greater than 1.89 the container that holds more is a 3-liter juice bottle.