Final answer:
An intensive property is a physical property that does not depend on the amount of substance present, distinguishing it from extensive properties which do depend on sample size.
Step-by-step explanation:
An intensive property of a substance is defined as a physical property that is independent of the sample size. Properties like temperature and density are examples of intensive properties because they do not change regardless of how much of a substance you have. For example, the density of gold remains the same whether you have a gram or a kilogram of it. Unlike intensive properties, extensive properties such as mass and volume do depend on the amount of the substance you have.
Therefore, the correct answer is D. A physical property that is independent of sample size.