This question has two parts. First, answer part A. Then, answer part B. Part A What is the purpose of the first paragraph of the article? A. to tell where the Eiffel Tower and Hoover Dam are located B. to show just how different the Eiffel Tower and Hoover Dam are C. to explain what is meant by the phrase “marvels of engineering” D. to describe how one type of material was used to make different structures Part B Which detail from the text best supports your answer in part A? A. “It’s hard to imagine two more different structures . . .” B. “Everyone expected it to remain in place for many, many years.” C. “Each piece had to be the right size and shape.” D. “Teams of people worked to take out the bolts and put in the rivets.”