Final answer:
Temperature, mass, solubility, and hardness are all intensive properties.
Step-by-step explanation:
An intensive property is a physical property that does not depend on the amount of the substance or its physical state at a given temperature and pressure. Based on this definition, temperature, mass, solubility, and hardness are all intensive properties. Therefore, none of the options listed (A. Temperature, B. Mass, C. Solubility, D. Hardness) is not an intensive property.