Answer:
The correct answer is C. coral reef
Step-by-step explanation:
Coral reef is a type of biome found mainly in the shallow region of oceans. Coral polyps form the coral reef by secreting calcium carbonate. So coral reef is a hard surface formed by coral skeleton. These corals live with symbiotic association tinny algae that create oxygenic environment.
Coral reef grows in shallow and warm water of the ocean and form an ecosystem that support many aquatic species like many bony fishes, starfish, jellyfish, sponges, crustaceans, etc.
These coral reefs are very important to maintain the diversity of oceans because the survival of many species of ocean is dependent on these coral reefs. Australia has the largest biome of coral reef which is 1,200 miles long.