Advertisement: Of the many over-the-counter medications marketed for the relief of sinus headache. Sine Ease costs the least per dose. And Sine Ease is as effective per dose as the most effective of those other medications. So for relief from sinus headaches, Sine Ease is the best buy.
Which of the following, if true, most seriously weakens the argument above?

Question

Examsnet · Accepted Answer

Correct Answer is :  An over-the-counter medication that is marketed for the relief of symptoms of head cold is identical in composition to Sine Ease but costs less per dose.

GMAT Verbal Reasoning Practice Test 7