Answer:
A
Explanation:
A. to persuade readers of the importance of science
C
"The dog turned up..." means it showed up, was returned etc. Etc. The details of how the dog turned up are not important..what is..is that your dog is home.
Throughout his writings, Bradbury used a lot of Text quotations or historical text written by other authors.
He did this so the authors that he Referenced will have the recognition that they deserve and so the readers could know where to look if they wanted to dig deeper to the materials that were referenced.