According to Your Textbook, Ithe Following Statement Occurred in the Body

According to your textbook, ithe following statement occurred in the body oa speech, it would be an example owhat kind oconnective?
In discussing the extent othe problem, we will look at the number oparents who don't vaccinate their children, the reasons they give for their decision, and the number ochildren who have become sick or died as a result.

A) internal preview
B) transition
C) bridge
D) precursor
E) internal summary