: It's important for designers and installers to ensure that equipment ground fault current paths have which will facilitate the tripping if the over current protective device? A. high impedance B. an equilibrium C. proper labeling D. low impedance

If you visited mount shasta city (elevation 900 m [3000 ft.]) and found the outside air temperature to be 27°c (81°f), what would be the air temperature at the summit of mount shasta (elevation 4200 m [14,000 ft.]) at that moment-assuming that the temperature conditions with altitude change at an average, or normal, lapse rate?