6. Why does the author most likely begin the selection by saying, "If you ever look around at people reading books on the beach or in the airport, chances are at least one of them is reading a book by "John Grisham"?
A. to grab reader's attention and focus on the subject's popularity
B. to show that reading selections are limited
C. to indicate popular places to read
D. to compare John Grisham to other writers