Final answer:
The more precise measurement is 14.2 gal (Option A) because it gives more specific information about the quantity being measured.
Step-by-step explanation:
When comparing the measurements given, the more precise measurement is 14.2 gal (Option A). This is because the decimal point makes it more precise than 7 gal (Option B), which has no decimal point. Precision refers to the level of detail or exactness in a measurement. In this case, 14.2 gal gives more specific information about the quantity being measured, making it the more precise measurement.