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In the humorous personal account, "Daring the Duomo," the narrator describes what happens when she tries to climb an ancient tower, in spite of her fear of heights. What role does suspense play in the story's effect?

It introduces a series of sub-plots that keep readers guessing about the end.
It makes the Duomo seem more like a person than a structure.
It delivers an extended metaphor that delivers the theme of the story.
It keeps readers eager to see the funny events that will follow.