How do these excerpts from Dr. Tyson's interview and the preface differ?

A. Dr. Tyson's interview uses complex sentences and precise vocabulary while his preface has run-on sentences and "filler" words.
B. Dr. Tyson's interview is not well-organized while his preface is clearly organized so the reader can easily understand it.
C. Dr. Tyson's interview has a clear and intended structure while his preface seems unplanned and not well thought out.
D. Dr. Tyson's interview is less emotional while his preface uses language that clearly expresses his feelings and emotions.