Final answer:
The theme of the Nun's Priest's Tale is flattery, as demonstrated by Chanticleer's capture and escape, showing the risks of vanity and the benefits of wit.
Step-by-step explanation:
A theme of the Nun's Priest's Tale, which is a part of Geoffrey Chaucer's The Canterbury Tales, can be related to the concept of flattery. Chanticleer the rooster is caught by a fox because he is tricked into closing his eyes and singing; the fox flatters Chanticleer's singing voice, thus preying on his vanity. However, Chanticleer then manages to escape from the fox by convincing him to talk and thus release him. This illustrates the theme that flattery can lead to a person's downfall but also that quick wit and clever thinking can lead to one's escape from a tricky situation. The tale thereby serves as a cautionary anecdote about the dangers of succumbing to flattery and the value of cleverness.