Which weather conditions are most probable when the moisture content of the air increases resulting in a lower

which weather conditions are most probable when the moisture content of the air increases resulting in a lower atmospheric pressure

1) Sunny and fair
2) a warm front
3) Cool, Dry air
4) marimtime tropical

There are only two weather conditions...1 and 3.

A warm front is a synoptic feature...not a weather condition.
Maritime tropical is an air mass classification...not a weather condition.

That leaves '1) Sunny and fair' and '2) Cool, dry air' neither of which answers the musical question..."which weather conditions are most probable when the moisture content of the air increases resulting in a lower atmospheric pressure."

"(W)hen the moisture content of the air increases resulting in a lower atmospheric pressure"...the most probable weather conditions would be clouds and possibly precipitation.

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