In his short essay, "Mars: The Final Frontier," Kent Nebergall, with the Chicago Society for Space Studies, uses hard scientific data and clearly argued logic. Nebergall drives home his points economically but eloquently. Read the introduction carefully. Which sentence improves this introduction?
Nebergall is an armchair Mars enthusiast with a career as a business analyst.
Nebergall argues convincingly that Mars is the last, best hope for the survival of humanity.
I think that Nebergall is a brilliant scientist who needs to be recognized.
Nebergall avoids using pathos in his essay.