The correct pronoun to be used in order to complete the sentence is the pronoun "she". So the complete sentence should be "She was elected to choir office", not the pronoun "it", because the verb "elected" only refers to a person. "It" can't be used to agree with the given verb.
C. Rant
he went into a long rant about the outcome of the last election
Explanation:
the boys were just as glued to their seats
The correct answer is affect.