Explanation:

- Cumulonimbus (Option 2):

- Characteristic 1: They form through convection as warm air rises and cools, creating towering clouds.

- Characteristic 2: They are the only cloud type capable of producing severe weather, including hail, thunder, and lightning.

- Characteristic 3: They exhibit large, cauliflower-shaped structures and often develop anvil-shaped tops due to strong upper-level winds.

- Stratocumulus (Option 1):

- Generally low-level clouds that appear as patches or layers.

- Do not typically produce severe weather or hail.

- Cirrocumulus (Option 3):

- High-altitude, small, and white patchy clouds.

- Usually indicate fair weather, not associated with severe weather events.

- Nimbostratus (Option 4):

- Thick, uniform cloud layers associated with continuous precipitation.

- Do not produce thunder, lightning, or hail.

Correct Answer: Cumulonimbus (Option 2)