Question

A puffy white cloud with a flat bottom

Answer 1

The cloud is a cumulus cloud

Answer 2

The correct answer is Cumulus.

These clouds look puffy and is flat in bottom. They look like cauliflower and  are white colored too.

These forms of clouds floats in the sky and seems to be like floating cotton. They are located at 3300 feet above the ground.

They always grow in upward direction and can sometimes form giant structures which are known a the giant cumulonimbus which is responsible for thunderstorms.