A sentence from a book by a famous bestselling author Dan Brown:
The pilot nodded. "Altitude sickness. We were at sixty thousand feet. You're thirty percent lighter up there. Lucky we only did a puddle jump. If we'd gone to Tokyo I'd have taken her all the way up a hundred miles. Now that'll get your insides rolling."
Is the statement correct?
a) Yes
b) No, the distance from the surface of the Earth have to be about 1000 km for a person to feel 30% lighter.
c) No, the person will not feel lighter at higher altitude since the upward force of airplanes engine compensates for the lack of gravity
d) No both arguments 2 and 3 are true