Gregmat Full test 1 I RC Doubt

Hi! Doubt in this passgae, pasting below first:



The is the QQ-

I picked the last option here because:

  1. It says “illustrate”, which is give an example of the “breadth of books”- and it does give us info about how the breadth of books is very narrow, only classics- which in turn support the point around American culture being strong
  2. Why I eliminated ans. choice 3- it says “highlight a failure”- we already know the failure as in the previous sentence, i.e. “mosaic view” was unable to be established- and here, the example supports that failure, and is therefore no new failure as the ans. choice seems to suggest.

Can you please tell me where my logic is flawed here?

The question asks why the author mentions Stallworth and Gibbsons’ study from the above image you can see that the green highlighted sentence basically says an event occurring and that event is the debate of whether multiculturalism in America is good or not. The red highlighted sentence gives us the result of the event in which the supporters of the latter, i.e. ‘mosaic view’ argued for multicultural canon as in multicultural set of books but failed. Then the entire blue highlighted sentence provides an example of how they failed and the second red highlighted in the blue sentence that says “frequently taught books were all traditional selections” supports the previous sentence because all the books were traditional not multicultural. Thus option 3 is correct as the author mentions them to highlight the failure of the mosaic view of American culture.

Got it, super clear, thanks!