Which of the following expresses the full equivalence of 1 gallon?

• A. 128 Fluid Ounces; 8 Pints; 4 Quarts.
• B. 120 Fluid Ounces; 6 Pints; 3 Quarts.
• C. 100 Fluid Ounces; 5 Pints; 2 Quarts.
• D. 144 Fluid Ounces; 9 Pints; 3 Quarts.

Answer: (A)

In US liquid measurements, the amounts are fixed: 1 gallon equals 4 quarts, 1 quart equals 2 pints, and 1 pint equals 16 fluid ounces. That means 1 quart is 32 fluid ounces, so 4 quarts total 128 fluid ounces. It also means 8 pints total 128 fluid ounces (8 × 16). So the full equivalence of one gallon is 128 fluid ounces, 8 pints, and 4 quarts. The other options don’t line up with these fixed relationships (for instance, 3 quarts would be 96 fluid ounces, not 120, and 9 pints would be 144 fluid ounces, not 128).