Final answer:
The excerpts provided do not relate to Gawain's arrival at the Green Chapel; in the related tale, he arrives on horseback with an attitude of nervous determination.
Step-by-step explanation:
In the context of the Arthurian legends, Gawain's approach to a daunting task is typically one met with a combination of valor and apprehension. However, the excerpts provided do not directly relate to Gawain or the Green Chapel from the tale of Sir Gawain and the Green Knight. These excerpts depict scenes from other narratives or poems and therefore don't provide information about Gawain's arrival at the Green Chapel or his attitude. In Sir Gawain and the Green Knight, Gawain does arrive at the Green Chapel on horseback, and his attitude is one of nervous determination as he honors his agreement with the Green Knight, despite the potential danger to his own life.