According to your textbook, the following passage from a speech introduction is an example of a(n) .
I became interested in canine companions two years ago when my older sister, who was paralyzed in a car accident, received a canine companion named Lucky. Since then I have learned more about the subject by watching Lucky, by talking with my sister, and by reading a number of articles and pamphlets.

a. preview statement

b. narrative statement

c. credibility statement

d. attention statement

e. thesis statement