i believe it is B. Better
Dad wasn't going to get cigarettes. He was abandoning his family. He's a deadbeat Dad. I'm sorry if this happened to you.
Their
The pronoun that agrees with the underlined indefinite pronoun is their.
The in-text citation should occur in the sentence where the cited material has been used: Signal phrase reference (author's name) appears within the sentence with page number in parentheses at the end of the sentence. Full parenthetical reference (author last name and page number) appears at the end of the sentence that’s what Siri said