Explanation
Correct answer: A.
Choice A is the best answer because it most effectively uses data from the table to complete the example of the high cost and low popularity of world's fairs. The text presents Chow's argument that the United States hasn't hosted a world's fair since 1984 because people think these exhibitions are overly expensive and insufficiently popular. The text then cites the 1984 World's Fair as an example, noting that it cost ＄350 million. Since the example should illustrate both high cost and insufficient popularity, the best completion of the example is the information from the table that the 1984 World's Fair had 7.35 million visitors.
Why the other choices are wrong
Choice B
Choice B is incorrect because it misrepresents data from the table. The table indicates that the 1984 World's Fair, which is the world's fair used as an example in the text, had 7.35 million, not 9.60 million, visitors.
Choice C
Choice C is incorrect because it misrepresents data from the table. The table indicates that the 1984 World's Fair, which is the world's fair used as an example in the text, had 7.35 million, not 6.40 million, visitors.
Choice D
Choice D is incorrect because it misrepresents data from the table. The table indicates that the 1984 World's Fair, which is the world's fair used as an example in the text, had 7.35 million, not 5.60 million, visitors.