Final answer:
Sir Gawain and the Green Knight presents a criticism of chivalry by having Gawain fail the Green Knight's test and exposing his lack of faith in the ideals of chivalry.
Step-by-step explanation:
Sir Gawain and the Green Knight presents a criticism of chivalry by having Gawain fail the Green Knight's test. The Green Knight challenges Gawain to a game where they exchange blows with an axe, and after Gawain strikes the Knight's neck, the Green Knight survives and demands that Gawain uphold his end of the bargain by seeking him out in a year and a day to receive a similar blow in return. Gawain, despite being a noble knight, hides a magical girdle given to him by the lady of the castle, which he believes will protect from harm.