15) i’ll put you as brainliest! 10 points
coral reefs share a symbiotic relationship with a type of algae called zooxanthellae. the hard exoskeleton that makes up a coral reef provides a safe habitat for zooxanthellae in return, zooxanthellae use sunlight to make food for themselves and for the coral. one of many threats to coral reefs is sedimentation run-off. sedimentation run-off clouds the water, as well as changes its chemistry if sedimentation run-off continues along coral reef coastlines, how would this most likely lead to the extinction of coral reefs?

a) by blocking sunlight from reaching zooxanthellae, sedimentation run-off may deprive coral reefs of the nutrients they need.
b) by causing zooxanthellae to rapidly increase in population, sedimentation run-off may greatly reduce the habitat available to coral reefs.
c) by causing coral reef waters to become overly warm, sedimentation run-off may cause coral reefs to become overheated.
d) by clouding the visibility of coral reefs from humans, sedimentation run-off may result in boats and ships destroying coral reefs.