Answer: Option (3) is the correct answer.
Explanation:
Both voltaic cell and electrochemical cells are used to produce electrical energy with the help of chemical reactions.
These cells also contain a salt bridge which helps in the neutrality of ions.
Therefore, in both the cells oxidation reaction occurs at anode and reduction reaction occurs at cathode.
Therefore, we can conclude that at the anode in both a voltaic cell and an
electrolytic cell oxidation occurs.
