Which reaction is an example of a combination redox reaction?

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CaO + H₂O → Ca(OH)2 S + O₂ → SO₂ Correct 2NaCl → 2Na + Cl₂ NaOH + HCl → NaCl + H₂O

In S + O₂ → SO₂, S (0 to +4) is oxidized, and O₂ (0 to -2) is reduced, combining into one product.

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