An electrochemical cell operates because the electrodes in the two half-cells differ in their electrical potential. A metal electrode composed of reducing agent will have a greater electrical potential to push electrons toward the electrode composed of a reducing agent.

i think a, hope it .

explanation:

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

i think   the answer is c hope i'm right