Which one of the following conditions are not favourable for the growth of coral reefs ?

A. Sediment free water

B. Fresh water

C. Moderate saline water

D. Disturbed water and currents

Answer: Option B

Solution(By Examveda Team)

Fresh water are not favourable for the growth of coral reefs. Coral require fairly good amount of sunlight to survive. The ideal depths for coral growth are 45 m to 55 m below sea surface, where there is abundant sunlight available. Clear salt water: Clear salt water is suitable for coral growth, while both fresh water and highly saline water are harmful.