The correct answer is they conduct electricity.Explanation:Metals are hard, malleable, lustrous, ductile, sonorous, and good heat and electricity conductors.Examples of metals are copper, iron, aluminium, magnesium, calcium, etc.Physical properties of metals:Metals are good conductors of both heat and electricity. Metals have this property, which allows heat and electricity to pass through them. Every metal is a good conductor of heat and electricity.Metals, with the exception of sodium and potassium, are extremely strong and hard. Knives can be used to cut them.Metals are found in solid form. Except for mercury, which is in a liquid state in its natural state, all metals are solid.Metals have a ductile property. This means that metals can be drawing into thin wires.All Metals are not less dense than water.