What shaded area of the graph best represents percentage marine organisms that became extinct at end Paleozoic?

The shaded area of the graph that best represents the percentage of marine organisms that became extinct at the end of the Paleozoic era is the area labeled "End-Permian Extinction". This area represents the largest and most significant extinction event in the history of life on Earth, where an estimated 96% of all marine species and 70% of all terrestrial vertebrate species became extinct.