The dry adiabatic lapse rate represents the greatest temperature change over altitude.
Explanation:
The dry adiabatic lapse rate is a measure of how temperature changes with altitude in a dry atmosphere. It describes the rate at which a parcel of dry air will cool as it rises in the atmosphere. The dry adiabatic lapse rate is about 9.8 degrees Celsius per kilometer, which means that for every kilometer a parcel of air rises, it will cool by 9.8 degrees Celsius. This is the greatest temperature change over altitude compared to other lapse rates.