The wide variety of organisms present in coral reefs and their complex relationships make coral reef preservation an important or false?

True.

Explanation:

The coral reef have a very complex relationship with the other organism present in the ocean. The coral reef are the carbonate structure found in the ocean that serves as home for many other organism residing in water.

The coral reefs provide shelter and is an important part of the marine ecosystem.The small fishes are eaten up by the big fishes and to hide from them they enter in these structure. Along with the small fishes many more organism are also present here.

So, its preservation is necessary.

the answers are a and c