The correct option is A Cycle
Vehicles
are a major pollution contributor. Vehicles produce significant amounts of
nitrogen oxides, carbon monoxide, and other pollution. Cycle is the vehicle
which does not pollute the environment. Cycles
do not need fossil fuels, so that they do not emit any harmful gases. So, cycle
is an eco-friendly mode of transport. Cycling 10 km each way to work would save
1500 kg of greenhouse gas emissions each year. Cycling has health benefits too.