To determine the best evidence from the poem that supports the answer to Part A, we need to analyze the lines you've provided in context.
If Part A is about the themes of struggle, hardship, and the solitary nature of the journey, then the lines that resonate with this idea are likely to be C ("but shut door and sharp stone and cuff and kick and hate") and D ("o mine is still the lone trail the hard trail the best").
- Line C highlights the challenges and obstacles faced, emphasizing rejection and adversity.
- Line D captures the essence of perseverance along a difficult path, suggesting that despite the hardships, there is value in the journey itself.
Therefore, if the question is about evidence of struggles and a challenging journey, lines C and D would provide strong support.