The term hygroscopicity is associated with what property of an explosive?

Hygroscopicity refers to the ability of a substance to absorb moisture from the environment. In the context of explosives, this property is significant because exposure to moisture can affect the stability and performance of the explosive materials. When an explosive is hygroscopic, it can absorb water vapor, potentially leading to degradation of the materials, which can affect their reliability and effectiveness in a detonation scenario. Therefore, understanding and managing hygroscopicity is crucial in handling and storing explosives to ensure safety and performance. This term directly relates to the moisture-absorbing property, making it the correct association in the question.