Answer:
It should be the Central processing unit, as it is the part where information is calculated in the compute, but RAM is also an internal working, used for temporarily storing information. I would Go with CPU to be safe.
I believe your answer would be C, but that also falls under a VPN.
Information technologies are unique not just because of their growing use in decision-making and knowledge management systems, important as that is. Their use has also yielded significant improvements in the efficiency of energy and materials use.
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