Which factor would tend to increase the density altitude at a given airport?
A
An increase in barometric pressure.
B
An increase in ambient temperature.✓ Correct Answer
C
A decrease in relative humidity.
Explanation
Density altitude rises when air becomes less dense, which happens with higher temperature, lower pressure and higher humidity (PHAK Chapter 4). An increase in ambient temperature therefore increases density altitude, while higher barometric pressure and lower humidity both make the air denser and lower it.
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