Correct option is D
Mercury has the highest resistivity among the given options.
Resistivity: A material's resistivity is a measure of how much it resists the flow of electric current. It is represented by the Greek letter ρ. The SI unit of resistivity is the ohm-meter (Ω⋅m).
Conductors: Materials that conduct electricity easily have a low resistivity.
Insulators: Materials that do not conduct electricity easily have a high resistivity.
Alloys: Alloys generally have higher resistivity than individual metals. For example, Nichrome, an alloy of nickel, chromium, iron, and manganese, has a higher resistivity than copper, silver, and aluminum.
