23 Which term identifies the half-reaction that occurs at the anode of an operating electrochemical cell?

(1) oxidation (3) neutralization

(2) reduction (4) transmutation

Oxidisation is the loss of electrons

Reduction is the gain of electrons

Neutralisation is the mix of acids and alkalis

Transmutation is the changing of an element from one to another.

The Anode is the positive electrode.

At the positive electrode, electrons are lost

So the process is Reduction (2)