Final answer:
In 'Beloved', Paul D arrives at Sethe's house after 18 years, marking an important turn in the narrative as Sethe confronts her past.
Step-by-step explanation:
In Toni Morrison's novel Beloved, Paul D arrives unexpectedly at Sethe's house. It has been 18 years since Sethe has last seen Paul D. The sudden reappearance of Paul D, a fellow former slave from Sweet Home, where Sethe was also enslaved, marks a significant moment in the novel as it triggers the exploration of Sethe's past and the emotional scars left by slavery.