Which is known as thunder cloud?

A. Mid-Level Clouds

B. High-Level Clouds

C. Low-level Clouds

D. Cumulonimbus cloud

Answer: Option D

Solution(By Examveda Team)

Cumulonimbus (from Latin cumulus, "heaped" and nimbus, "rainstorm") is a dense, towering vertical cloud, forming from water vapour carried by powerful upward air currents. If observed during a storm, these clouds may be referred to as thunderheads.