1. PARTA: Which of the following describes the central idea of the text?
A The nose and tongue often send conflicting messages to the
brain that can make food taste bad.
B Humans have taste receptors that are unique to them and
will likely taste different things in food.
C The nose and tongue send messages to the brain to give
humans information about what they've eaten.
D Humans often eat without breathing through their nose and
miss out on the full experience of taste.

answer: do

the 'italicized phrase' is a noun clause that is used as a direct object.

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."

in what passage i'm sorry but i don't see anything there.

may i know the title of the book?