Where are booklice commonly found?

Booklice are commonly associated with mold and damp environments, which is why they are found on moldy paper and books in damp areas. These small insects thrive in conditions where there is high humidity and moisture content, as this is where their primary food source—mold—proliferates. Booklice feed on mold spores, and therefore, damp areas are ideal for their survival and reproduction.

In contrast, while dry areas and dry paper might seem appealing, they do not provide the essential conditions booklice need for thriving since mold is less likely to grow in low humidity environments. Additionally, while kitchens, basements, and attics may experience varying levels of humidity, they do not specifically highlight the connection between booklice and dampness as strongly as areas with moldy materials do. Thus, identifying booklice with the conditions presented in option B aligns directly with their biology and ecological needs.