Answer:
These lines tell us that the Green Knight mocked the knights of Arthur’s court for being cowardly and not accepting his challenge. King Arthur stepped up to accept the challenge himself, but Gawain does not let his king suffer such humiliation and accepts the potentially fatal challenge. By this act, Gawain upholds the code of chivalry.
Step-by-step explanation:
Taking i n consideration the context of the paragraph and the meaning of each of the words, the correct words to complete the paragraph are humiliation and code, it is expressed in the first paragraph that Gawain was not going to allow his king to pass through an embarrassing situation and he follows a code of the knights that says they have to show bravery, and honour.