One mole of sodium represents

1 mole of any substance, be it atoms/molecules /ions or even sub-atomic particles like

electrons, protons or neutrons, they all contain Avogadro Number $\left(N_A\right.$ ), i.e., $6.022\times {10}^{23}$ particles.

So, 1 mole of sodium $=6.02\times {10}^{23}$ atoms of sodium

or, 1 mole of sodium $=23 g$ sodium which is its atomic mass per mole.

Hence, option (A) is correct.