Which statement correctly describes the relationship between air temperature and air pressure?

When  the  temperature  gets  high  the  pressure  gets  high

Explanation:

as the air warms up the molecules in the air become more active and they use up more individual space even though there is the same number of molecules. This causes an increase in the air pressure.

c)as speed changes, wavelength and frequency change.

everything changes!

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue