What term describes forms that result from the growth and aggregation of ice crystals?

The term that describes forms resulting from the growth and aggregation of ice crystals is snow. Snow forms in the atmosphere when water vapor freezes into ice crystals. These tiny crystals cluster together, creating snowflakes. Snow can accumulate on the ground and create a layer of snow cover.

Other options represent different phenomena: hail forms from intense storms and consists of balls or irregular lumps of ice, often resulting from strong updrafts in thunderstorms. A blizzard refers to a severe snowstorm characterized by strong sustained winds and low visibility, while sleet consists of small pellets of ice that fall when rain freezes before reaching the ground. Thus, snow is specifically connected to the formation of ice crystals through aggregation and growth.