1. The problem involves converting or understanding volume units and their abbreviations. 2. The units given are cubic inch [in^3], fluid ounces [fl oz], gallon [gal], liter [L], and cubic foot [ft^3]. 3. The example row shows values for each unit: 722 in^3, 400 fl oz, 3.12 gal, 11.83 L, and 0.418 ft^3. 4. The question (a) asks to identify which unit corresponds to the value 3 in the last column, which is under cubic foot [ft^3]. 5. Since the checkbox is marked only under cubic foot for the value 3, it means 3 cubic feet is the volume in question. 6. To confirm, 3 cubic feet is a volume measure, and the other units are smaller or different volume units. Final answer: The value 3 corresponds to 3 cubic feet [ft^3].