Answer:
Aloft high pressure develops in cold air regions while low pressure develops in warm air regions
Explanation:
A thermally-driven circulation, or thermals are the movement of warm air that move to a higher level due to the buoyancy forces acting on them. That is due to the difference in densities between the warmed and cool air
Given that pressure = Density, <em>ρ</em> × Gravity, <em>g </em>× Height, <em>h</em>, we have that decrease in pressure (low pressure) is due to low density, therefore, the warm air having low pressure, moves upwards, due to their low density
Therefore, the best option is aloft, (as we move higher), high pressure develops in cold air regions while low pressure develops in warm air regions