Question

study the arrow that is circled in the image. what happens at this point? warm air is rising. cool air is sinking. there is a difference in air pressure. cool air is less dense than warm air.

Explanation:

The circled arrow shows horizontal air flow between a cool, high-pressure area (left, where air sinks) and a warm, low-pressure area (right, where air rises). Air moves from high to low pressure, which is driven by a pressure difference. The other options describe adjacent processes, not what occurs at the circled arrow itself: warm air rising is at the red arrows, cool air sinking is at the blue downward arrows, and cool air is more dense (not less) than warm air.

Answer:

C. There is a difference in air pressure.