King uses a metaphor to describe despair as a mountain and hope as a stone that can come from that mountain. How does the comparison help King achieve his purpose?

King compares despair to a mountain and hope to a stone taken from it, showing that something positive can be found within a painful situation. This supports the idea that good can come from hardship, which is the point of choice B. The comparison is not giving directions or saying that the struggle itself is like mountain climbing.

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