CORRECT ANSWER is conductance.'Mho' is the unit conductance, while siemens is the SI unit of conductance.Conductance - It is the measure of how freely the free ELECTRONS(charge carrier) can flow.It is the reciprocal of electrical resistance, given by G.Conductance, G = \(I \over V\)Resistivity - It is the measure of electrical resistance offered by a material. It is given by rho (ρ).Resistivity, ρ = \(RA\over l\), where R is resistance, A is area of cross-section, l = length of wire.Conductivity - The ABILITY of a material to conduct electricity. It is the reciprocal of resistivity.Conductivity = \(l\over RA\)Resistance - Property of a material to resist the flow of charge carriers. It is given by R.R = \(V\over I\)(Ohm's law), also R = \(ρl\over A\)