Concept:Paul wrote some letters to church communities and others to specific people.Explanation:Romans, Corinthians, and Colossians were all addressed to churches or groups of believers. They were meant for congregations. Philemon, however, was written to Philemon as a single individual. It deals with his personal dealings with Onesimus. Therefore, among the options, the letter written to an individual is Philemon.Answer:D. Philemon