Concept:Cumulo-nimbus clouds are the tall, dense clouds that cause thunderstorms and heavy rain in tropical regions.
Explanation:Heating in the Tropics is intense during the day.
This produces strong rising air currents called convection.
Rising moist air cools rapidly and forms towering cumulo-nimbus clouds.
These clouds release heavy rain, thunder, lightning, and sometimes hail.
Altostratus, cirrus, and ordinary cumulus clouds bring lighter or no precipitation.
They do not normally produce severe storms.
Answer:D. cumulo-nimbus