Answer:
in computer science, an instruction is a single operation of a processor defined by the instruction set
Explanation:
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Three major functions of a game engine would be Physics, Programming, and an audio engine should be some major functions of a game engine.
The answer is: [A]: "bibliographic generators" .
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Well books, videos and music can all be copyrighted (I believe) so the logical answer would be b. inventions. Hope this helps.