- Fri Aug 17, 2018 7:10 pm
#49762
Hi Howard,
Correct Strengthen answer choices can run the gamut from being to fully justify the argument (essentially being sufficient assumptions) to necessary assumptions to an additional premise that makes the conclusion only slightly more likely. The argument here relies upon an assumption that the added pollutants from driving to buy products were there no direct mail advertising would at least offset the pollution caused by direct mailing, based on another assumption that the people buying products online or by phone because of direct mailings would go out and buy the product at the store otherwise. This logical gap is thus the one we should be looking to fill. We don't know how much of it will be filled, but the correct answer choice will do so to at least some degree.
Answer choice (B) works by helping, albeit not fully, to make it more likely that the products bought in response to the direct mail advertising would instead be bought by people who drive to a store, thus helping make the conclusion a little more likely to be true. In this way it is a necessary assumption, but there are a lot more than just this one.
Answer choice (D) doesn't actually strengthen the argument, because it addresses a parallel issue of whether direct mail advertising is effective at getting people to buy things, as opposed to whether people are buying them in ways that don't involve driving. So this answer choice doesn't strengthen the argument, which is based upon whether the environmental cost of the advertising offsets the environmental cost of driving to buy stuff in the absence of the advertising, meaning makes it more likely that people are driving to stores less. And this answer choice doesn't make it more likely that someone would forego use of a car or not, only more likely that they would buy the product advertised. If anything, this might weaken the argument, by allowing us to infer that direct mail advertising just encourages people to buy more stuff, not necessarily making them drive to the store less.
Hope this clears things up!
Correct Strengthen answer choices can run the gamut from being to fully justify the argument (essentially being sufficient assumptions) to necessary assumptions to an additional premise that makes the conclusion only slightly more likely. The argument here relies upon an assumption that the added pollutants from driving to buy products were there no direct mail advertising would at least offset the pollution caused by direct mailing, based on another assumption that the people buying products online or by phone because of direct mailings would go out and buy the product at the store otherwise. This logical gap is thus the one we should be looking to fill. We don't know how much of it will be filled, but the correct answer choice will do so to at least some degree.
Answer choice (B) works by helping, albeit not fully, to make it more likely that the products bought in response to the direct mail advertising would instead be bought by people who drive to a store, thus helping make the conclusion a little more likely to be true. In this way it is a necessary assumption, but there are a lot more than just this one.
Answer choice (D) doesn't actually strengthen the argument, because it addresses a parallel issue of whether direct mail advertising is effective at getting people to buy things, as opposed to whether people are buying them in ways that don't involve driving. So this answer choice doesn't strengthen the argument, which is based upon whether the environmental cost of the advertising offsets the environmental cost of driving to buy stuff in the absence of the advertising, meaning makes it more likely that people are driving to stores less. And this answer choice doesn't make it more likely that someone would forego use of a car or not, only more likely that they would buy the product advertised. If anything, this might weaken the argument, by allowing us to infer that direct mail advertising just encourages people to buy more stuff, not necessarily making them drive to the store less.
Hope this clears things up!