Select the option that correctly completes the sentence.
The store representative told me that someone would call me back regarding the invoice and _________

The possessive form of the pronoun “it” does not have an apostrophe. A good way to remember this is to compare it to other possessive pronouns: his, hers, theirs. These possessive pronouns do not have apostrophes either. “Its” only gets an apostrophe if it is a contraction of “it is.” The other answers don’t work because they personify the invoice by calling it a “her” or a “them (their).”