If you're NOT moving anywhere for more than a minute, turn off your engine to save fuel. Thus the correct answer is B.
Saving fuel is important as it is the price of fuel is increasing day by day and overconsumption may lead them to deduction in the quantity so they can not be available for future use.
The quality of the air that we inhale is degrading, people are increasingly becoming energy sensitive. Energy conservation will aid economic growth, enhance the environment, and decrease the effects of rising oil costs and our dependency on foreign imports of oil.
Turning off the engine when not moving to any place will help in saving fuel, the turned-on engined creates the wastage of fuel when the vehicle is not in movement.
Therefore, option B Turn off your engine is appropriate.
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