Which sentence best explains why a literary analysis essay is a secondary source? a. because it provides firsthand information about a literary work b. because it contains original information from and about a literary work c. because it includes information from a literary work to provide a fresh perspective d. because it provides biographical information about the author of a literary work

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."