Explanation:
The main reason for the popularity of Geoffrey Chaucer’s The Canterbury Tales was its accessibility and universal appeal. The tales were written in Middle English, the language spoken by the common people of England, rather than in Latin or French, the languages of the educated elite. The tales also covered a wide range of subjects and themes, from love and romance to religion and politics, and were told by a diverse group of pilgrims from different social classes and professions. This made the tales relatable and engaging to a broad audience, and they quickly became popular among both the educated and non-educated classes in medieval England.