Question

Why are standard electrode potentials affected by the nature of the electrode?

Answer 1

At least partly by the ease with which electrons are added/removed from the electrode material.

Answer 2

The options are :
Different metals have different electrical conductivities.
Different metals have different densities.
Different metals have different specific heat capacities.
Different metals have different oxidation or reduction potentials.

Answer 3

My answer agrees with A.
D is true, also, but my interpretation of that is that answer D simply restates the question.