Two vast areas of air have different temperatures and pressures, but within the regions, the temperatures and pressures are similar. The areas would be
called:
O A. pressure troughs.
O B. ridges and troughs.
O C. continental disturbances.
D. air masses.

The correct answer is option D.

Explanation:

Air masses are the two vast areas of air with different pressure and temperature but within the regions the pressures and temperatures are similar as one other. The regions of colliding air masses called as weather front.

At this front, the denser air mass slips quickly while the less thick air mass ascent  rapidly. Because of the world's revolution, the Coriolis impact makes the front turn into a channel and can bring about tropical storms and tornadoes.

Thus, the correct answer is : option D.

D. air masses

Explanation:

Air mass is defined as the region created when temperature and pressure are similar at a region.

Air masses are build when the air stays for a long time in the same region and allow temperature and pressure to be similar. Air Masses will acquire the properties of below surface as long as it stays over the source region.

There are four types of air masses polar, tropical, continental and maritime that are classified on the basis of the location of formation of air masses.

Hence, the correct option is D. air masses.