An intensive property is defined as a:
Physical property of a system that does not depend on the system size or the amount of material in the system
Explanation of the correct option:
(b):
Intensive properties: The physical properties of a system that do not depend on the system size or the amount of material in the system. They only depend upon the nature of the substance. Example: Freezing point, Boiling point, Refractive index, etc.
Explanation of the incorrect options:
(a) Physical property of a system that depends on the system size or the amount of material in the system is known as an extensive property. Example: Mass, volume, etc.
(c) An intensive property is not dependent on the internal properties of the system. It depends on the nature of the substance in the system.
Hence, option (b) is correct.