What common feature is found on both liquid-desiccant and solid-desiccant cargo- hold dehumidification systems?

Correct Answer: Option B — Both systems require a continuous source of heat to drive the moisture out of the desiccant.

Cargo-hold dehumidification systems using either liquid or solid desiccants rely on thermal regeneration to expel accumulated moisture. A continuous external heat source is mandatory during the reactivation cycle to drive absorbed water vapor out of the desiccant material.