'Today, secret passages are still uncovered in many older homes and office buildings. These discoveries help historians understand more about history of hidden passageways and about the people who built them." Question: Why does the author choose to conclude the passage with the above selection? -0) To inform the reader that hidden passages are still discovered today, but are not important to historians and their work, B)To inform the reader that hidden passages are still found today and lead to new understanding of those who used them C)To inform the reader that hidden passages are rarely found today, and make understanding of these hidden areas difficult. D) To inform the reader that secret passages continue to be discovered, which prove that criminals used them.​