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Answer :

The given expression is

[tex]\frac{0}{m+n}[/tex]

Let's assume that

[tex]m\in\R,n\in\R[/tex]

In this case, remember that any numbers which divide zero results in zero.

[tex]\frac{0}{m+n}=0[/tex]

Now, we know that zero belongs to the whole numbers set and above.

Therefore, all the answer choices are correct.

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