The title 'Loving Responsibility' encapsulates the central theme of both passages. In Passage 1, Martin demonstrates loving responsibility by taking care of his younger sisters, ensuring their safety as he walks them to school, and planning to buy them fresh milk with his earnings. This shows his dedication and care for his family. In Passage 2, Abby's dad also exhibits loving responsibility by prioritizing the care of his father while involving Abby in the process. He teaches her how to check the oil in the car, which not only addresses a practical need but also allows them to spend quality time together. Both characters show a deep sense of responsibility towards their loved ones, making 'Loving Responsibility' the most appropriate title.