If an aircraft is climbing from sea level with a temperature of 14 °C, how much fuel is used to reach 12,000 feet?

To determine the amount of fuel used for a climb to 12,000 feet, several factors must be considered, including the aircraft's fuel consumption rate during the climb and the performance characteristics at various altitudes.

At sea level, a temperature of 14 °C is conducive to efficient engine performance and fuel burn during the climb. As the aircraft ascends, environmental factors, particularly air density, change. At 12,000 feet, the temperature typically decreases, affecting engine performance. However, manufacturers provide specifications on fuel consumption in relation to altitude and temperature.

In general, fuel consumption is not linear with altitude as engine efficiency changes, and the climb rate impacts fuel usage significantly. An effective estimate for fuel usage during a standard climb often falls within expected ranges, where 10 gallons can be a reasonable approximation for the fuel burnt at that specific climb profile, depending on the aircraft type, its power settings, and airspeed during ascent.

Thus, if the calculated or expected fuel consumption aligns with the typical performance and fuel-burn characteristics specific to that climb profile, the choice of 10 gallons reflects a common estimation for the trip to 12,000 feet under the given conditions. This supports the conclusion that B is the correct choice based on standard operational