What are the different types of clouds?

The classification of clouds into the categories of Low, Middle, High, and Special Clouds is based on their altitude and specific characteristics. Low clouds generally form below 2,000 meters (approximately 6,500 feet) and include types like stratus and stratocumulus. Middle clouds, which exist between 2,000 and 6,000 meters (about 6,500 to 20,000 feet), consist mainly of altostratus and altocumulus. High clouds form above 6,000 meters and are typically thinner, such as cirrus and cirrostratus. Special clouds refer to unique cloud formations that don’t fit neatly into these altitude categories, including clouds like lenticular, mammatus, or the cloud associated with severe thunderstorms (e.g., cumulonimbus).

The other options presented do not comprehensively cover the classification of clouds based on altitude and type. For instance, the second option lists specific cloud types but does not categorize them by their altitude. The third option includes phenomena like fog and haze, which are not classified as clouds. The fourth option mixes cloud types with weather phenomena like thunderstorms and tornadic conditions, which also strays from a structured classification system.