Introduction:
The tool for spinning copper is specifically designed and made for the purpose of spinning copper. Spinning is a metalworking process that involves the shaping of a flat metal disc or sheet into a hollow object by pressing it against a rotating mandrel. It is commonly used in the production of various cylindrical objects, such as pots, pans, and other kitchen utensils.

Explanation:
The correct answer to this question is option 'B' - copper. Here's why:

1. Material Compatibility:
The tool for spinning copper is made specifically to work with copper as the primary material. Copper is a highly malleable metal that can be easily shaped and formed. It has excellent thermal conductivity and is widely used in electrical wiring and plumbing applications. Therefore, a specialized spinning tool is required to effectively shape and form copper into the desired object.

2. Spinning Process:
Spinning copper involves a unique metalworking process that requires a specific tool. The spinning tool typically consists of a wooden or metal mandrel, a metal spinning chuck, and a metal spinning roller. The copper sheet or disc is clamped between the spinning chuck and roller, and as the mandrel rotates, the copper is gradually shaped and formed into the desired hollow object.

3. Design Considerations:
The tool for spinning copper is designed to accommodate the unique properties of copper. Copper is softer than many other metals, such as brass or steel, and requires a spinning tool that can apply the appropriate amount of pressure without damaging or deforming the material. The tool may have specific features, such as adjustable pressure settings or specialized rollers, to ensure optimal shaping and forming of copper.

4. Material Differences:
While brass, tool steel, and aluminum can also be spun using similar processes, the tool for spinning copper may not be suitable for these materials due to their different properties. Brass is an alloy of copper and zinc, which has different mechanical properties compared to pure copper. Tool steel is a high-strength material used for cutting tools, not typically used for spinning. Aluminum, on the other hand, has different malleability and requires specific tooling for effective spinning.

Conclusion:
In conclusion, the tool for spinning copper is specifically designed and made for the purpose of shaping and forming copper into hollow objects. The unique properties of copper and the specialized spinning process require a tool that is compatible with copper and can apply the appropriate pressure without damaging the material. While other materials may also be spun using similar processes, the tool for spinning copper may not be suitable for them due to their different properties.