Confused on the difference between A&D

Hi @amandapaige, The problem with (D) is that it essentially negates the answer we are looking for - it is an illegal negation. Hope this helps.

I thought the conclusion was the first sentence of the stimulus. How is the last part the conclusion??

Hi @ulino23, Thanks for the question! Take a look at the wording here: it’s the two previous sentences that “demonstrate that” the mayor is not an introspective person. In other words, were we to diagram this, we would diagram it: P1) Mayor is undeniably bold P2) Assertions are made with utter certainty and confidence (this could be a premise supporting P1 as a subsidiary conclusion, but the argument still makes sense like this) C) Mayor is not introspective The alternative interpretation would be: P1) The mayor is not an introspective person P2) Assertions are made with utter certainty and confidence C) New mayor is undeniably bold But it’s not the fact that the mayor is not introspective that supports the idea that he’s bold. It’s the idea that he’s bold that supports the idea that he’s not introspective. Thus, the last sentence is the conclusion. Hope this helps! Feel free to ask any other questions that you might have.