They want a sentence that most logically completes the passage and I just can't see how it could be A (the correct answer).
I understand how the second part of A - that the Marcusian critique does not provide solid ground for proving that advertising is bad - is correct but I can't identify the first part (about how advertising may actually be detrimental to society) with the author's statements anywhere. The whole last paragraph of the passage seems to be devoted to the idea that advertising isn't that bad. Tacking a sentence to the end of that conceding that it may have negative effects doesn't seem to logically complete that idea at all, so A wasn't even on my radar when it came to choosing an answer.
I chose D. I can see how D is wrong since there's no mention of the benefits of advertising "clearly outweighing" the cons, despite the tone of the last paragraph but it seemed the least wrong of all the answer choices to me.
Can anyone help explain A?