Answer:
The correct answer is option A. decreases.
Explanation:
When warm air rises, air pressure decreases. Warm air inversely proportional to the air pressure. When warm air rises, the air pressure decreases and when warm air decrease, the air pressure increases. Warm air is less dencer than cold air, so the air pressure of cold air is higher than warm air. Warm air moves upward and cold air takes its place.
