Which option is the best example of characterization in a story? A. The use of all five senses to describe a battle between rival armies
O B. Statistics about the strongest swimmers in next year's
competition
O C. A strong moral choice the main character makes under pressure
O D. A dialogue in which the main character gains important
information

I'd go with C personally

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."