Question

the digital display on the jump pack shows
?
jump pack is active
dc voltage of engine starter
vehicle voltage
all of the above

Explanation:

A jump pack is a portable device used to start a vehicle with a dead battery. The digital display on a jump pack typically shows multiple important pieces of information. It can indicate if the jump pack is active (to let the user know it is functioning properly). It also shows the DC voltage of the engine starter as this is crucial for assessing the power available for starting the engine. Additionally, it shows the vehicle voltage which helps in understanding the electrical state of the vehicle's battery system. Since all these are common and useful pieces of information to be displayed on a jump pack, the most comprehensive answer is that it shows all of the above.

Answer:

D. All of the Above