People who are bold make public assertions with utter certainty
If we thought of the first sentence as a conclusion, supported by the 2nd sentence, then the reasoning would look like this: assertions made w/ utter certainty and ? bold confidence But this answer is generalizing about "bold people". They are the universal category, so they would be the sufficient condition. a person is bold ? The author tells us that this mayor is bold and that this mayor makes assertions with utter certainty and confidence. But there's no reasoning move from one to the other. The author doesn't say, "The mayor is bold. Thus, he must make assertions with utter certainty and confidence". That kind of reasoning move is assuming what this answer is saying. The author just lists two facts about the mayor. If I say, "Jenny is from Pennsylvania. She loves tennis." I'm not assuming "people from Pennsylvania love tennis". I'm just providing two facts about jenny. When we generalize like "people who are bold" / "people who are from Pennsylvania", we're saying at a minimum, Most [bold people] or Most [people from PA]. Some people may have thought the first sentence was a Conclusion and that the second sentence was support. While "undeniably bold" sounds opinionated, it also sounds like something the author isn't planning to support. When authors say "it's a given that X", "as we all know, X", or "it's undeniable that X is true", they are stating it as an axiom we all accept, not an opinion they have that they need to defend to us. And when an author says "this demonstrates that / this suggests that / this reveals that / this shows that", she is making a reasoning move. The evidence we have presented to you over the last few weeks of this trial demonstrates that there is only one conclusion you can come to --- Eddie is the killer!