Question

The author of an article about childhood vaccinations has no medical training.

Answer 1

The answer is C BECAUSE HE DOESNT KNOW STUFF ABOUT VACCINATIONS SO HES NOT A RELIABLE SOURCE

Answer 2

The best evaluation of this author's qualifications to write this text is C: This author is not qualified to write this article.

The reason behind this choice is that the author has no medical expertise concerning the area of childhood vaccinations. Thus, the article would be an unreliable source. The author of a reliable source of information should have expertise on the subject.