Final answer:
The Pardoner from Geoffrey Chaucer's The Canterbury Tales represents the issue of church corruption in medieval society by selling false relics and indulgences, exploiting the religious piety of the people for personal gain.
Step-by-step explanation:
One of the pilgrims from the prologue of Geoffrey Chaucer's The Canterbury Tales that represents an issue of medieval society is the Pardoner. The Pardoner is a figure that exemplifies the corruption within the Church during the Middle Ages. He sells papal indulgences—promises of reduced penance for sins—and carries with him what he claims to be holy relics, using them to manipulate people into making donations. The issue illustrated by the Pardoner is the commercialization of faith and the exploitation of the laity's belief in the power of relics and the Church's authority to grant salvation.
Medieval society was deeply religious, and the notion of undertaking a pilgrimage was to pay homage to holy sites and relics with the belief that being closer to God in this life would mean being closer in the afterlife. The Pardoner's character shows how this deep-seated piety could be abused by church officials for personal gain, undermining the spiritual purpose of the pilgrimages and damaging the Church's credibility among the people.