Select the container size that is equal in volume to 60 gallons of fuel (7.5 gal = 1 cu. ft.).

To determine the correct container size in cubic feet that is equal to 60 gallons of fuel, first, you'll need to convert gallons to cubic feet using the given conversion factor (7.5 gallons = 1 cubic foot).

Start by converting 60 gallons into cubic feet:

1. Divide the volume in gallons by the conversion factor:

[

\text{Volume in cubic feet} = \frac{60 \text{ gallons}}{7.5 \text{ gallons per cubic foot}} = 8 \text{ cubic feet}

]

This calculation shows that 60 gallons of fuel is equivalent to 8 cubic feet.

Thus, the correct answer, which represents the container size equal to 60 gallons of fuel, is 8.0 cubic feet. This demonstrates that correctly applying unit conversions ensures accurate measurements, which is crucial in aviation maintenance where precise fuel quantities can affect safety and performance.