Reread this passage from "Daring the Duomo."

"I saw a tiny, soda can-sized gap in the middle of the stairs. I’m significantly wider than a soda can, yet wondered if my body could somehow slip through that space and fall all the way down."

How does this passage create humor?
It exaggerates the seriousness of an event.
It describes a particularly absurd thought.
It describes an object or animal as a person.
It places two unrelated objects together.