Electrical conductance through metals is called metallic or electronic conductance and is due to the movement of electrons. The electronic conductance depends on which of the following factor?

All of these.

Electrical conductance through metals is called metallic or electronic conductance and is due to the movement of electrons. The electronic conductance depends on (i) the nature and structure of the metal (ii) the number of valence electrons per atom (iii) temperature (it decreases with increase in temperature).