Answer: Option (c) is the correct answer.
Step-by-step explanation:
A device that is used to generate electricity is known as electric cell.
An electric cell consists of two electrodes, that is, anode and cathode. Anode has negative charge whereas cathode has positive charge. Also there is an electrolytic solution present inside the cell.
At anode, oxidation occurs due to which electrons are released at anode. Whereas reduction occurs at cathode due to which there occurs addition of electrons.
This exchange of electrons results in the production of electricity.
Hence, we can conclude that electrons are in excess at the negative terminal of an electric cell.