Help me plz
Which idea best supports the following thesis statement?
If coral reefs are allowed to die, our oceans will be irreversibly changed.
A) Many animals who live in the coral reefs will either have to adapt to a new home or perish.
B) The reefs are delicately balanced ecosystems; small changes in temperature can quickly destroy them.
C) Scientists who have been studying the reefs for years are reporting an increasing amount of bleached, or dead, coral.
D) If you have always wanted to see coral reefs, you should plan a trip as soon as you can; otherwise you may never get a chance