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Passage
In 1968, a high-school student in Japan discovered the fossilized bones of a plesiosaur, a giant marine
reptile that lived some 85 million years ago. Shark teeth stuck in the plesiosaur's bones, and other shark
tooth fossils found nearby, suggest that this plesiosaur was attacked by a group of what were essentially
miniature great white sharks. The plesiosaur discovery reveals that ancient sharks, which were thought to
have eaten only fish, may also have attacked reptiles. After the discovery, researcher Kenshu Shimada
said, "It is still possible they could've eaten fish, but at least this fossil shows the plesiosaur was one of the
food items."
Question
The author of the passage does which of the following?
O Relates a personal anecdote
O Provides statistical data
O Quotes a named authority
O Challenges an official view
CO