Support Cigarette smoking has been shown to be a health hazard; therefore, Conclusion governments should ban all advertisements that promote smoking.
The author argues that since smoking is a health hazard, governments should ban all ads that promote smoking. The premise is about a property of the product (smoking is hazardous). The conclusion is about how to treat the ads for that product (ban them). The principle has to connect those two things.
We're looking for a principle along the lines of "Ads for unhealthy products shouldn't exist." Any answer that supports a full ban on cigarette ads, purely because cigarettes themselves are hazardous, is on the right track.
Which one of the following ███████████ ██ ████████████ ████ ████████ ████████ ███ █████████
Advertisements should not ██ ███████ ██ ████ ██████ █████ ██████ ████ ████████ █████ ███████
This is the tempting trap. (A) pairs ads with health and ends in "should not be allowed," which sounds like a ban. But consider what (A) actually targets: ads that show people doing things that endanger their health. That's about the content of the ad, not the product being sold.
Imagine a cigarette ad that's just a logo and a slogan, with no people and no smoking shown. The argument's conclusion still wants it banned. But (A) doesn't touch it, because the ad doesn't depict anyone doing anything dangerous. (A) restricts certain depictions; the argument wants to restrict promotion of a hazardous product, not just certain depictions.
Advertisers should not ████ ██████████ ██████ █████ ███ █████████████ ██ █████ █████████
Misleading claims are a separate issue. An honest cigarette ad that says nothing about health would still be banned under the argument's conclusion, but (B) wouldn't apply.
Advertisements should disclose ███ ██████ ███████ ██████████ ████ ███ ████████ ████ ████████
Wrong remedy. (C) calls for disclosure (warning labels, basically), not a ban. Under (C), cigarette ads would carry health warnings and continue to run. The argument wants the ads gone, not just relabeled.
All products should ███████ ██ ██████ ██████████ ██████ ███ ██████ ██████████
(D) is about the products meeting safety standards, not about the ads. Whether cigarettes pass or fail some government standard, (D) doesn't say anything about banning their ads.
Advertisements should promote ████ █████████ █████████
If ads should promote only healthful products, and cigarettes are a health hazard (so not healthful), then cigarette ads aren't permissible under this principle.