Got your PM! Okay, let's see...
Q: strengthen the idea that ad promotes greater public health
A:
(p) dentists' study: use mouthwash = eff. as flossing
(p) MW comp has ad: don't like floss, only use MW
(p) F comp sued: misleading ad
Conclusion is not in the argument; it's in the question. A little bit of a disconnect, though. The question says "greater PUBLIC health" while the argument says they claim "good DENTAL health." Typo when transcribing? Sloppy editing by the question's author? A little scope-change they're hoping people won't catch and the problem hinges on it? Not sure. I've never seen the real test change the scope of the conclusion in this way in the question. If a leap like that is made, that leap shows up in the conclusion as part of the original person's / company's / whoever's argument.
Okay, to the answers. 1st pass: decide between "definitely no" and "maybe."
A) dental floss company. conclusion not about them. we don't care. eliminate.
B) the issue isn't between using MW alone or using both. It's about replacing F with MW. Maybe that is "greater public health" than using F alone. who knows? eliminate.
C) they may "object" but this doesn't say they don't F as a result, or that they'd be more likely to use MW than F. also, the argument is about *replacing* F with MW ("can NOW rely SOLELY on MW"), which means those people are using F, which gives evidence that at least some of the "objectors" floss anyway. no evidence that the "objectors" don't floss or don't floss as much as the general population or whatever. eliminate.
D) ah, now we're talking about people doing MW more than F. ok. it's not a slam dunk, but it's a maybe.
E) says nothing about F vs. MW. eliminate.
Look at that - only D is a maybe. Guess that's the right one!
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Stacey Koprince
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Manhattan GMAT
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