This doesn’t verify that health education usually tries to influence behavior through the repetition of simplistic slogans, which is what the correct answer must do. While (A) may imply that health education isn’t education, it doesn’t validate the author’s conclusion that health education is usually propaganda.

This doesn’t verify that health education usually tries to influence behavior through the repetition of simplistic slogans, which is what the correct answer must do. While (B) may imply that health education isn’t education, it doesn’t validate the author’s conclusion that health education is usually propaganda.

To conclude that health education is usually propaganda, we need to know that health education usually attempts to influence behavior through the repetition of simplistic slogans. (C) is the opposite of what we need.

Since we know that propaganda is an attempt to influence behavior through the repetition of simplistic slogans, and education never involves this method, (D) validates the editorial’s conclusion that health education is usually propaganda rather than education.

Both education and propaganda attempt to influence people’s behavior, so (E) is irrelevant. We need to know that health education usually attempts to influence behavior through the repetition of simplistic slogans.