What is the most important reason to continue efforts to preserve coral reefs?
a. coral reefs are a valuable commodity in the aquarium business.
b. coral reefs support a wide variety of organisms.
c. coral reefs are one of the oldest ecosystems.
d. coral reefs are important for marine recreation.

The best answer would be B. Coral reefs should be preserved because it supports a wide variety of organisms. Coral reefs are one of the most economically important and biologically diverse ecosystems. They provide valuable and essential ecosystem services to a lot of marine organisms. They are to be preserved by all means because they are a source of food for some, coastlines are protected from storms, provide habitat, and is used for marine recreation.