Answer:
Frame narrative
Step-by-step explanation:
Frame narrative refers to a story that appears within another story. This is a literary technique in which a story serves as an introduction or a setting for a more developed story or set of stories. In this case, The Canterbury Tales is built as a frame narrative because each of the pilgrims' stories is told within the larger narrative of the pilgrimage. Other works of literature that use this structure are Frankenstein and The Thousand and One Nights.