Concerning cargo-hold dehumidification, what statement is true?

Correct Answer: Option D — Cargo hold moisture content is reduced by supplying relatively dry air from the outside and exhausting relatively humid air to the outside.

Cargo hold moisture reduction relies on supplying drier outside air to displace humid internal air, which is then exhausted overboard. This continuous exchange prevents cargo sweat and condensation damage by maintaining safe psychrometric conditions within the space.