Which of the following acts as a cathode in a dry cell?

In a dry cell (Leclanché cell), the anode is a zinc container.

The cathode is a graphite (carbon) rod surrounded by powdered manganese dioxide ($\text{MnO}_2$) and carbon.

The space between the electrodes is filled with a moist paste of ammonium chloride ($\text{NH}_4\text{Cl}$) and zinc chloride ($\text{ZnCl}_2$).

Therefore, the graphite rod acts as the cathode.

Answer: Graphite rod