Hello,
A computers operating system manages the software and hard ware on the computer.
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<span>The correct answer is D - all of the above. It's important to maintain a vehicle to keep it road-worthy for as long as possible without compromising fuel economy, environmental impact or safety. It may also be a legal requirement.</span>
They may invade privacy rights of air space and be used for other unintended acts such a bombings and espionage