The purpose of a hook in an intro is to grab the reader's attention.
B, he is showing he knows he's getting better becoming more hopeful
He Green Knight<span> says that he will allow whomever </span>accepts<span> the </span>challenge<span> to strike him with his own axe, on the condition that the challenger find him in exactly one year to receive a blow in return. ... As soon as Arthur grips the </span>Green Knight's<span> axe, Sir</span>Gawain<span> leaps up and asks to </span>take<span> the </span>challenge<span> himself.</span>