Introduction:
The question pertains to the use of abrasives in various processes, specifically the buffering, burnishing, polishing, and super finishing processes. The correct answer is option B, which states that abrasives are not used in the burnishing process. This answer can be explained by understanding the characteristics and purpose of each process.

Buffering Process:
- Abrasives are commonly used in the buffering process.
- The buffering process involves using a rotating buffer wheel or pad, which is coated with an abrasive material.
- The abrasive material helps to remove imperfections, such as scratches or uneven surfaces, from the workpiece.
- As the buffer wheel rotates against the workpiece, the abrasive particles abrade the surface, resulting in a smoother finish.

Burnishing Process:
- Unlike the buffering process, abrasives are not used in the burnishing process.
- Burnishing is a finishing process that involves rubbing a hard, smooth tool or roller against the workpiece surface.
- The purpose of burnishing is to create a smooth and shiny finish by plastically deforming the surface of the material.
- The tool or roller used in burnishing is typically made of a hard material, such as steel or tungsten carbide, but it does not contain abrasive particles.
- The burnishing tool compresses and smoothes the surface of the workpiece, resulting in a polished appearance without the use of abrasives.

Polishing Process:
- Abrasives are commonly used in the polishing process.
- Polishing involves rubbing a fine abrasive material against the workpiece surface to remove any remaining imperfections and create a highly smooth and reflective finish.
- The abrasives used in polishing can vary in size and composition, depending on the desired level of finish and the material being polished.
- Polishing can be done by hand using abrasive pastes or compounds, or it can be done mechanically using polishing machines with rotating abrasive pads or wheels.

Super Finishing Process:
- Abrasives are commonly used in the super finishing process.
- Super finishing is a high-precision process that is typically performed after grinding or other machining operations.
- It involves using very fine abrasives, often in the form of a slurry or paste, to remove any remaining surface roughness and improve the geometry and surface finish of the workpiece.
- Super finishing can be done using specialized machines that apply the abrasive slurry to the workpiece surface, or it can be done manually using abrasive films or stones.

Conclusion:
In summary, abrasives are used in various processes such as buffering, polishing, and super finishing. However, they are not used in the burnishing process, which relies on the use of a hard, smooth tool or roller to create a polished finish by plastically deforming the surface of the workpiece.