Silverfish and firebrats prefer to inhabit:

Silverfish and firebrats are known for their preference for dark, moist environments. They tend to inhabit areas that provide shelter and protection, such as cracks, crevices, and generally secluded spots where they can avoid light and potential predators. These pests thrive in the dark because it also helps them stay hidden from both humans and other larger pests that may pose a threat.

While they may tolerate some temperature variations, they are particularly attracted to places that are not exposed to direct light, as light can deter their natural behavior. Consequently, their habits align closely with the characteristics of dark places, making this the most accurate choice regarding their preferred habitat.