The poet laureate consultant, and the librarian of congress eagerly prepare for the new walt whitman exhibit. how is the comma used incorrectly in the sentence above?
the comma attempts to separate a compound subject.
the comma attempts to separate a compound predicate.
the comma attempts to set apart an essential element.
the comma attempts to join two independent clauses.

In the real world, feldman learned to settle for less than 95 percent. he came to consider a company “honest” if its payment rate was above 90 percent. he considered a rate between 80 and 90 percent “annoying but tolerable.” if a company habitually paid below 80 percent, feldman might post a hectoring note, like this one: the cost of bagels has gone up dramatically since the beginning of the year. unfortunately, the number of bagels that disappear without being paid for has also gone up. don’t let that continue. i don’t imagine that you would teach your children to cheat, so why do it yourselves? the excerpt serves as which type of support for the authors’ argument? a claim an example a conclusion a counterclaim