The Pauline epistles, also known as Epistles of Paul or Letters of Paul, are the thirteen books of the New Testament attributed to Paul the Apostle, although the authorship of some is in dispute. Among these epistles are some of the earliest extant Christian documents
So the question is to find the best answer that could support and complete the question and the answer to your question is letter D. Ending their alliances system. I hope you are satisfied with my answer and feel free to ask for more if you have clarification and questions