(A) Permanently frozen layer
(B) Large system of winds
(C) Violently rotating column
(D) None of these
🧠 Explanation:
- A cyclone is a large-scale weather system involving a low-pressure center surrounded by strong, rotating winds.
- It often brings heavy rainfall, thunderstorms, and high-speed winds, especially in tropical and subtropical regions.
- Unlike a tornado (a violently rotating column), a cyclone covers a much broader area and lasts longer.
- Therefore, the major characteristic of a cyclone is being a large system of winds, making option (B) correct.