Using the available references, if the dry bulb temperature is 68°and the wet bulb temperature is 65°, what is the relative humidity in a cargo hold?

Correct Answer: Option C — 85%

Using standard psychrometric tables with a dry bulb temperature of 68 degrees Fahrenheit and a wet bulb temperature of 65 degrees Fahrenheit provides an intersection corresponding to a relative humidity of 85 percent within the cargo space.