The bolded word is "them."
Answer: B) Objective.
Explanation: Pronouns are words that take the place of nouns. Personal pronouns have three cases: nominative, objective, and possessive. Nominative case pronouns (I, she, he, we, they, etc) are used as subjects in the sentence. Objective case pronouns (me, her, him, us, them and whom) are used as direct objects, indirect objects, or objects of a preposition. Possessive case pronouns (my, mine, your, yours, his, her, hers, its, our, ours, your, yours, their, and theirs) are used to show ownership. In the given sentence the pronoun "them" is in the objective case, because it is the indirect object of the sentence.