Citing specific evidence from Chaucer's Canterbury Tales , how "religious" was medieval society (or was not)?
Society was quite religious in the aspect that formalized religion dominated day-to-day life and politics, but one could argue that religious morals were suspect.
For example, the Friar accepted bribes. The following lines from the General Prologue illustrate this:
He was an easy man to give penance/
When knowing he should gain a good pittance;/
For to a begging friar, money given/
Is sign that any man has been well shriven./
For if one gave (he dared to boast of this),/
He took the man's repentance not ...
The solution is a short exploration of Chaucer's Medieval stories pertaining to the practice of a devout life.