Which altitude range correctly defines the base height for high clouds?

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Multiple Choice

Which altitude range correctly defines the base height for high clouds?

High clouds have bases starting above 20,000 ft. In aviation meteorology, cloud base heights are grouped so that high clouds (cirrus, cirrostratus, cirrocumulus) form above 20,000 ft, mid-level clouds from about 6,500 to 20,000 ft, and low clouds below roughly 6,500 ft. So the correct range for the base height of high clouds is above 20,000 ft. The other ranges correspond to mid- or low-level clouds.

High clouds have bases starting above 20,000 ft. In aviation meteorology, cloud base heights are grouped so that high clouds (cirrus, cirrostratus, cirrocumulus) form above 20,000 ft, mid-level clouds from about 6,500 to 20,000 ft, and low clouds below roughly 6,500 ft. So the correct range for the base height of high clouds is above 20,000 ft. The other ranges correspond to mid- or low-level clouds.

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