Final answer:
None of the given options (A through E) represent an extensive property of brass. All options refer to specific heat, which is an intensive property, not changing with the amount of material. Heat capacity, not provided in the options, would be an example of an extensive property.
Step-by-step explanation:
The student is asking about the properties of brass, which is an alloy primarily composed of copper and zinc. Specifically, they are inquiring about an extensive property related to brass. An extensive property is a physical property that changes when the size of the sample changes. In the context of the given options, none of the choices (Specific Heat of Aluminum, Copper, Brass, Silver, or Platinum) refer to an extensive property. This is because specific heat is an intensive property, which does not depend on the amount of material present. Specific heat is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius (1°C). By contrast, heat capacity is an extensive property since it refers to the total amount of heat required to raise the temperature of a given mass of a substance by 1°C. Thus, the correct answer to the student's question would be that none of the listed properties are extensive properties of brass.