Gawain wears the green girdle as a symbol of his weakness. He behaved deceitfully and returned to Camelot bearing the girdle as a symbol of his failure in keeping his vow.
Answer: the correct answer is as a symbol of his weakness
Explanation: Since Gawain was not able to exchange the girdle with Bertilak as the terms of the men's agreement mandate, it also means to the reader Gawain's desperate willingness to stay alive at the expense of his code of honor. Only after Gawain is "unsuccessful" the Green Knight's test does this meaning become clear to him.
I would ask this first because the most important thing in your presentation is what your goal is and what you want to accomplish. Without knowing what your goal is, you will not be able to focus on the other things you mentioned.
The line that shows the value of the match its the second one "…it was a long, long time before they learned how to kindle one easily". The match allows humankind to handle fire easily.
