Read the following selection from the section
"Consumer Advocacy Groups Get Involved."
Erik Olson works for the Natural
Resources Defense Council, one of the
groups that sued over the six
ingredients. He said it's also unknown
what effect they might have when used
in combination with other ingredients.
Which answer choice explains how the author uses
rhetoric in the selection above to help form the
overall argument?

A. The author makes her argument more logical
by explaining the claims used by the Natural
Defense Council in its lawsuit

B. The author makes her argument more
personal by stating that the effects of
combining certain ingredients are unknown

C. The author makes her argument more credible by citing an expert employed by a group involved in the lawsuit.

D. The author makes her argument more objective by including a counterargument in favor of the flavor industry.