It is letter d
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1. true
2. false
3. true
4. true
5. true
if you would like an elaboration, let me know
<span>It switches on the electric power for many convenience components of the car like car stereo, power windows, power seats and cigarette lighter. It depends on the car, if this position also switches on energy thirsty components like headlights, rear window defroster and air ventilator. </span>
They're not dangerous. However, they do cause mild tremors.