B. Thus Fortune with a light / Turn of her wheel brings men from joy to sorrow.
Explanation:
The Monk's Tale is a set of 17 short stories and it is part of the "Canterbury Tales" by Geoffrey Chaucer. The moral of his story, as it is seen in these lines, is that fate is random and impossible to control. Your destiny is fixed and no matter what you do you do not decide what will happen in your life.
