The reason why skin is relatively waterproof is because of
the component it has which is the keratin. The keratin serves as a protector as
this protein prevents cells of the skin to be damaged, such as making the skin
to be water proof as it is exposed with water.
If the processor has forwarding, but you forgot to implement the hazard detection unit and when the code executes, you need to control the signal. It is the signal that informs the new ALU. You should also perform the execution of the given codes.
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I think it'd be E. I hope that helps!