Option A is correct. The factors you should consider when selecting the speed of your vehicle is posted maximum speed limit.
When determining a safe speed to drive at, you must also take into account the road's condition, visibility, and the movement of other traffic in addition to the official speed limit. Additionally, letting other drivers know when you intend to vary your speed would help you stay safe.
Driving safely not only keeps you safe, but it also saves you money and lowers air pollution. Gas, maintenance, and tyres are just a few of the costs associated with operating an automobile. There are some free actions that motorists and auto owners can do to reduce these costs.
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