I'd go with B because since she loves puppies, she'll surely squeal in delight...
It entails being out of touch with reality, where your optimism isn't grounded in comparison to the situation you're in.
For example, imagine climbing Mount Everest and you underestimate the weather, which are underestimating obstacles and risks.
These contrasting metaphors were used by Fitzgerald to convey the message that tolerance has a limit and that morality is always at stake despite having a strong foundation. The end justifies the means most especially when there is a lot to gain. Ethics can be powerful as described by a "hard rock" or weak as referred by "wet marshes".
