Final answer:
The most tropical revolving storms, known as tropical cyclones, occur primarily in the equatorial regions between the Tropics of Cancer and Capricorn and are called hurricanes, typhoons, and cyclones in different parts of the world.
Step-by-step explanation:
The most tropical revolving storms, known as tropical cyclones, occur in the equatorial regions, specifically between the Tropics of Cancer and Capricorn. These storms form over warm ocean waters and require a temperature of at least 80 °F to initiate the rapid rising of warm, moist air. This process is fed by the Earth's rotation, causing cyclonic patterns with the Coriolis effect prompting storms to rotate counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. Within different geographies, these tropical cyclones are known by different names. In the North Atlantic and the Caribbean Sea, they are called hurricanes; in the North Pacific, typhoons; and in the Indian Ocean and South Pacific, they are named cyclones. Therefore, the correct answer to the question is (b) Equatorial regions.