Using the available references, if the dry bulb temperature is 98°and the wet bulb temperature is 87°, what is the relative humidity in a cargo hold?

Correct Answer: Option C — 64%

Psychrometric chart calculations using a dry bulb temperature of 98°F and a wet bulb temperature of 87°F yield a relative humidity of approximately 64%, a critical metric for preventing cargo sweat and moisture damage in holds.