High air pressure usually means clear weather because stable air is sinking. The correct option would be D.
High air pressure
High air pressure usually causes the sky to be clear.
This is because high air pressure causes the air at the lower atmospheric level to sink down towards the earth.
This is unlike low air pressure. It brings a cloudy sky along with precipitation.
More on air pressure can be found here: https://brainly.com/question/15189000
#SPJ1
