Which one of the following statement is true? (1) A scalar quantity is the one that is conserved...

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Which one of the following statement is true?
(1) A scalar quantity is the one that is conserved
\( \mathrm{P} \) in a process

W
(2) A scalar quantity is the one that can never take negative values
(3) A scalar quantity is the one that does not vary from one point to another in space
(4) A scalar quantity has the same value for observers with different orientation of the axes
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