Which describes an altocumulus cloud?
a. high, feathery cloud
c. low storm cloud
b. puffy mid-level cloud
d. high cloud made of ice crystals

b. puffy mid-level cloud

Explanation:

A cloud is a large collection of very small drops of water or ice crystals. The drops are so small and light that they can float in the air.

Altocumulus clouds are mid-level clouds made of water droplets, which look like puffy gray masses. They usually form in groups. If you see altocumulus on a hot morning, it may indicate that thunderstorms will appear late in the afternoon.