The highest cloud is

A. Cumulus

B. Stratus

C. Cirrus

D. Alto Cumulus

Answer: Option C

Solution(By Examveda Team)

Cirrus clouds are short, detached, hair-like clouds found at high altitudes. It is the highest known cloud which seems to be very delicate and wispy, with a silky sheen, that looks like tufts of hair.
These are a very vivid white colour, present in the sky individually, not connected.