8. Which of the following BEST describes the
author's purpose in writing this passage?
A. To prove that Steinberg and Casey's work
left important questions unanswered
B. To explain Steinberg and Casey's theories
and how her own team helped provide
evidence for them
C. To show how her own team's evidence
disproved Steinberg and Casey's theories
D. To argue that ner teams work was the foundation for theories that Steinberg and Casey later developed