Why are metals good conductors of electricity?
A) They have a high melting point
B) They gain electrons easily
C) They have low resistance
D) All of the above

Hint: So, if we consider the question we will see that for answering the question correctly we need to know about the conductivity and the properties of the metal. Then only we will get to know the fact why metals are good conductors of electricity. Conductivity is the proportion of the ease at which an electric charge or heat can go through a material. A detailed discussion is shown below.


Complete answer:
Electrical conductivity in metals is a consequence of the development of electrically charged particles. The atoms of metal components are described by the presence of valence electrons, which are electrons in the external shell of a particle that is allowed to move about. It is these "free electrons" that permit metals to direct an electric flow. By this process, electricity is conducted through metals because they have a very low value of resistance.
Since valence electrons are allowed to move, they can go through the cross-section that shapes the actual structure of a metal. Under an electric field, free electrons travel through the metal a lot like billiard balls thumping against one another, passing an electric charge as they move.
Conduction in metals must follow Ohm's Law, which expresses that the flow is straightforwardly relative to the electric field applied to the metal. The law, named after German physicist Georg Ohm, showed up in 1827 out of a distributed paper spreading out how flow and voltage are estimated by means of electrical circuits. The critical variable in applying Ohm's Law is a metal's resistivity.
So, metals are good conductors of electricity because they can conduct electricity with a low value of resistance.

Hence,the correct option is C.

Note: In metals, there are free electrons since they structure metallic bonds with one another which makes an ocean of electrons. Metals have low opposition and high electrical conductivity. Metals are acceptable conveyors since they comprise a cross-section of atoms with free electrons. The free electrons permit a current to move through. At the point when a negative charge is applied toward one side, the electrons are repulsed from the negative charge and move towards the opposite end.