Engineer1
I have no idea why D is the OA. I am stuck between A, B, C.
C - Possibly incorrect because it is too specific, meaning it talks about "very competitive sectors".
The conclusion of the argument is about a comparison of the two types of promotions. (C) is about BOTH TYPES. So, it doesn't change the comparison because a fact that's true about both doesn't offset the advantage of the free gift form of promotion that the passage brings up.
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B - Possibly incorrect because even if the profit is diluted, it could still mean higher boost of sales w/ a gift vs with a discount. Not really a weakener.
Exactly, and the effect could be diluted if the prices of two competing magazines are discounted as well.
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A - I am still not sure why A is incorrect. It directly attacks gift as a method of promotion. If it does not appeal to the customer, the sales likely won't lead to higher boost. Not the perfect choice, but seems like the best of 5.
Notice that the passage STATES AS FACT that "a one-dollar discount on the retail price (which is set by the publisher) can also boost sales, but the boost tends to be somewhat smaller."
So, regardless of what choice (A) says, we know that the free gift approach boosts sales more.
So, (A) is written to seem to contradict that premise in the passage, but it doesn't and thus has no effect on the argument.
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D - Completely clueless why it is correct.
The conclusion of the argument is the following:
including a gift is the more cost-effective form of promotion (in comparison with a discount)Here's the key part of the support for that conclusion that we have to notice:
Doing so might cost the publisher one dollar per copy distributed to newsstands.We see that including a gift costs the publisher a dollar PER COPY DISTRIBUTED.
What we then have to figure out is that offering a discount costs the publisher only PER COPY SOLD. After all, offering a discount does not cost the publisher anything if the copy is not sold.
So, if what (D) says is true, then it's possible that offering a free gift is not as cost-effective as offering a discount since, in offering a gift the publisher may incur a one-dollar-per-copy cost for each copy returned by newsstands whereas offering a discount won't have the same result since there is no discount-related cost associated with returned copies of a magazine. When copies are returned, the discount disappears.
In other words, (D) presents a factor, additional cost, that may offset the greater size of the boost provided by the gift approach.
Thus, (D) indicates that, actually, offering a discount may turn out to be the more cost-effective form of promotion and thus serves to cast doubt on the conclusion.