In the summer of 1995, explorers discovered the wreck of a ship more than three hundred years old. It was found under twelve feet of muddy water in Matagorda Bay off the coast of Texas. The Belle was one of Rene-Robert Cavalier, Sauer de La Salle’s ships. Who was the man La Salle, what was he doing so far from his native France, and how did his expedition affect Texas history?

Why does the writer ask a question in lines 7-9?
a. to guide his or her research
b. to convince the reader to write back
c. to grab the reader's attention
d. to point to future research projects

c. to grab the reader's attention