How do the underlined sentences on page 4 fit into the structure of the passage as a
whole?
They connect the passing of the ADA to the
founding principles of the United States.
They compare the ADA to other important
documents from the past.
They explain how the ADA guarantees the
rights of Americans with disabilities.
They describe how different parts of the
government worked to pass the ADA.

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."

i don't care about the hunger games ripred wins (look up gregor the overlander)

what is the passage? try looking at the headline of the passage