Insulators are defined as the equipment or items, which are not capable of transmitting electricity and heat. Unlike insulators, the conductors transmit heat and electricity due to the presence of electrons.
The correct statement is:
Compared to insulators, metals are better conductors of electricity because metals contain more free electrons.
Conductors are metals or equipment, which are capable of transmitting heat and electricity. The metals such as silver, copper, and aluminum are excellent conductors of heat and electricity.
The conductors are easily able to transfer electricity because of the presence of free electrons. The electrons vibrate and move around the metal, and collide with the atoms of the metal to transfer heat and electricity.
The vibration of free electrons makes them efficient conductors of electricity.
Therefore, the correct answer is electrons.
To know more about conductors and insulators, refer to the following ink:
https://brainly.com/question/1294837
