from which type of clouds do hail pellets form?\ncirrus\ncumulonimbus\nnimbostratus\nstratus

Brief Explanations:

Hail pellets form in cumulonimbus clouds. These are large, dense clouds associated with thunderstorms. The strong updrafts within cumulonimbus clouds carry water - droplets high into the atmosphere where they freeze and form hailstones. Cirrus clouds are high - altitude, thin clouds and do not form hail. Nimbostratus clouds are associated with continuous rain, not hail. Stratus clouds are low - lying and usually bring light precipitation or overcast conditions, not hail.

Answer:

cumulonimbus