11. What happens to atmospheric pressure as a person rises in altitude?
A. It's unaffected by changes in altitude.
OB. It decreases.
C. It changes based on the time of year.
D. It increases.

see explanation

Explanation:

Increase altitude => decreasing pressure... as matter of fact, the standard lapse rate is - 1.0 lbs/in² per 1000 feet. That is ...

at earth's surface => P = 14.2 psi

at 1000ft => P = 13.2 psi

at 2000ft => P = 12.2 psi

at 5000 ft => P = 9.2 psi and so on.

it should be all of them because it asks if you included all of those in your answer

explanation:

catya that's not even a b or c