Answer :
The central idea that is conveyed by this part of the extended metaphor is C. Neither decision appears to be better than the other.
What is a central idea?
A central idea simply means the main idea in a literary work. It's the underlying message in the story.
In this case, the central idea that is conveyed by this part of the extended metaphor is that neither decision appears to be better than the other. They both had same impact.
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