When starting a vehicle with an automatic transmission, be sure the gear selector is set in (P)ark or (D)rive.
What are automatic cars?
Automatic cars are those who have automatic options for shifting of gears. We do not have to adjust the gears by ourselves.
These cars have mode of Park, if we are moving the car, to start the car we must change it from Park to drive mode.
Thus, the fill the blank is Drive.
Learn more about automatic cars
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