Which is known as thunder cloud?
A
Mid-Level Clouds
B
High-Level Clouds
C
Low-level Clouds
D
Cumulonimbus cloud
Correct Answer: Cumulonimbus cloud
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.