The example in the excerpt helps the authors arrive at which of the following conclusions? The majority of people are corrupt.
The majority of people are honest.
Glaucon and Paul Feldman were wrong.
Socrates and Adam Smith were wrong.

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."

about 25% of a paper can be direct quotes.