Please choose the correct answer to the question: Of the examples listed, which event is thought by scientists to have led to the greatest extinction?

Answer1: a volcano in Hawaii erupting Answer2: the construction of the Hoover Dam Answer3: whalers of the 17th, 18th, and 19th centuries Answer4: the Mississippi River flooding its banks each summer

Answer format: answer1/answer2/answer3/answer4
Answer: answer3