1. Electrolytic conductance of a solution depends on how easily ions can move and how many ions are present in the solution.

2. Let us examine each factor:

   A. Nature of solvent used
   This affects conductance because the solvent influences:

   • ionization of the electrolyte
   • viscosity of the medium
   • mobility of ions
     So, this does affect electrolytic conductance.

   B. Nature of the electrolyte added
   Different electrolytes produce different numbers of ions and have different ionic mobilities. Strong electrolytes and weak electrolytes conduct differently.
   So, this does affect electrolytic conductance.

   C. Nature of the electrode used
   Electrolytic conductance is a property of the solution and depends on ions in solution, not on the material of the electrode (under ordinary conductance measurement conditions).
   So, this does not affect electrolytic conductance.

   D. Concentration of the electrolyte
   Conductance depends on concentration because the number of ions per unit volume changes with concentration.
   So, this does affect electrolytic conductance.

3. Therefore, the factor that does not affect electrolytic conductance is:

$\boxed{\text{C. The nature of the electrode used}}$

4. Comparison with stored correct answer:
   Stored correct answer = C
   Derived answer = C
   Hence, they agree.