Correct Answer: Iron

Solution : The correct option is Iron.

Through a displacement or redox process, iron (Fe) may deposit copper from a copper sulphate (CuSO4) solution. The following is a representation of the reaction: CuSO4(aq) + Fe(s) -> FeSO4(aq) + Cu(s) ; Iron (Fe) displaces copper (Cu) from the copper sulphate solution in this reaction, producing ferrous sulphate (FeSO4) and depositing solid copper (Cu) as a reddish-brown precipitate. Because iron is more reactive than copper in this situation, it can replace copper in the complex, resulting in copper metal deposition.