We can see that the sentence that would provide the best concluding sentence for the passage is:
E. It is easy to see, then, that tourists might have a different perspective than locals do about the life cycle of mayflies and its many effect on humans.
<h3>What is conclusion?</h3>
Conclusion refers to a brief statement that summarizes what an author has written in a text. Conclusion is usually seen towards the end of a passage or text.
We see here that the sentence that would provide the best concluding sentence for the passage if added after sentence 16 is "It is easy to see, then, that tourists might have a different perspective than locals do about the life cycle of mayflies and its many effect on humans".
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