Which condition is most favorable for bed bug populations to thrive?

Bed bugs thrive in environments with high humidity because this condition supports their biological needs and reproductive processes. High humidity levels create a more hospitable atmosphere for bed bugs, allowing them to retain moisture and facilitating their survival and mating.

In contrast, low humidity and dry environments can desiccate bed bugs, making it difficult for them to survive and reproduce. Cold temperatures also pose a significant threat to their survival, as they can become inactive and enter a state of dormancy, which can ultimately lead to decreased populations. Therefore, high humidity is key to maintaining healthy bed bug populations, allowing them to flourish and spread effectively.