The two things being compared is the spider and the inexperienced man
B. abyss
Definition: a deep or seemingly bottomless chasm.
In the 20,000 leagues under the sea, they had made the important decision on escaping the Nautilus which leads to the climax and main part of the story. Which is the building action leading to major changes around them causing drastic decisions needing to be made, which then leads to falling action, causing them having to rethink decisions and create different resolutions.
