At 39,000 feet altitude, the cabin pressure of an aircraft would

at-39000-feet-altitude-the-cabin-pressure-of-an-aircraft-would

At 39,000 feet altitude, the cabin pressure of an aircraft would be automatically maintained at _________ feet.
A. 15,000
B. 10,300
C. 2,000
D. 6,900
The correct option is D. 6,900

For explanation: The cabin pressure is automatically maintained near about 6,900 feet when the aircraft is flying at 39,000 feet. The pressure may also be specified as 79 kPa of atmosphere pressure.