Final answer:
As a dream vision, Piers Plowman is structured around a series of allegories in which theological truth is taught in the form of an extended metaphor.
Step-by-step explanation:
As a dream vision, Piers Plowman is structured around a series of allegories in which theological truth is taught in the form of an extended metaphor. In this poem, various characters and places represent abstract concepts and moral virtues, allowing the author to convey complex ideas in a symbolic and imaginative manner. For example, the character of Piers the Plowman represents the common working man, while the character of Lady Holy Church represents the Church as an institution.