Which of the following best describes the term wet-bulb and/or dry-bulb?

The term dry-bulb is accurately defined as the measurement of the ambient air temperature. This temperature is measured using a standard thermometer exposed to the air but shielded from radiation and moisture, reflecting the actual air temperature without any influence from humidity levels.

On the other hand, the wet-bulb temperature is taken with a thermometer that has a moistened wick at the bulb end, measuring the temperature that reflects the cooling effect of evaporation. This value is crucial for understanding humidity and how it affects thermal comfort and heat stress.

In summary, dry-bulb temperature refers specifically to the straightforward ambient temperature, making the choice of this definition correct in the context of the question.