The correct answer is: lower central air pressure.
The correct answer is lower central air pressure. When central air pressure in a hurricane decreases, it creates a pressure difference between the center of the storm and the surrounding atmosphere. This pressure difference causes air to rush into the low-pressure center. As the air moves inward, it begins to spiral upward and rotates faster and faster. This rotation, combined with warm ocean waters and moist air, leads to the formation and intensification of a hurricane. So, when the central air pressure decreases, it causes hurricanes to increase in strength.
