5. High-pressure systems are usually not associated with

A clear weather

B relatively dry conditions

C rising air

D descending air

C. Rising Air

Explanation:

High pressure is usually associated with C. Clear, dry weather. If you look at the weather, when there's high pressure systems, little to no clouds are in the sky and it's very nice outside.

So that eliminates A, B, and D since Air is moving away from the high pressure center at the surface (or "diverging") so as a result, air from above must sink to take its place. The surface flow is accompanied by the opposite behavior at upper levels of the atmosphere.

Hope for that high pressure weather! clear skies and great weather!

Have a great day!