Answer:
Chaucer uses irony in The Canterbury Tales to promote his theme that appearances do not always match reality. He demonstrates this theme through the tales told by pilgrims on a spiritual journey.
Step-by-step explanation:
Irony, in its basic form, is a literary device or technique authors use to demonstrate how events are not always as they seem. In The Canterbury Tales, Geoffrey Chaucer (c. 1343–1400) uses this technique to show his readers that physical appearances often differ dramatically from reality.