Acoral reef is an underwater structure that is home to many sea animals that use the water as a resource. some animals are called stony corals because they have hard bodies that resemble rocks; these provide protection to other animals that live on the reef. which is the largest organizational level found in one coral reef? organism population ecosystem biome

ecosystem

An ecosystem is a community of living and non-living components. A coral reef is an aquatic ecosystem which is formed by a continuous walls of calcium carbonates released by living animals they get combine to form rocks. These rocks and walls are collectively called as hard stony corals. These hard stony corals provide shelter to many aquatic animals like fishes. As the water is the chief abiotic factor along with coral walls and rocks which help in the survival of living organisms therefore, ecosystem is the largest organizational level found in one coral reef.

the answer is c because it is most logical.