The answer, in my opinion, is the second sentence, "The coach who is an expert in the sport explained the revised rules to us". Here, the "Who is an expert", is presumably the nonessential clause.
He believed
that Leopold and Loeb were not receiving a fair trial because they were poor.
<span>Of all the
statements in the excerpt above only one references a general feeling about an
entire situation being discussed. While
some statements include how Darrow felt about a certain topic, only the third
sentence is a description of a viewpoint on the overall matter at hand.</span>
The word that is not one that a Politician or news personality would use to support the space Program during the 1960s is "Arrogance."