- Sandpaper is used to smooth the surface objects
- Sandpaper is a kind of tool for smoothing objects
- Therefore, sandpaper is a tool for smoothing the surface objects

- An engineer constructs a prototype from wood
- A prototype is a kind of object
- Therefore, the wooden prototype is a kind of object

- Sandpaper is a tool for smoothing the surface objects
- The wooden prototype is a kind of object
- So, sandpaper can be used to smooth the surface of the wooden prototype

- Sandpaper can be used to smooth the surface of the wooden prototype
- The engineer needs a tool to smooth the surface of the wooden prototype
- Hence, the engineer can use sandpaper to smooth the surface of the wooden prototype

Therefore, the engineer can use sandpaper to smooth the surface of the wooden prototype
An engineer constructs a prototype from wood. Which of the following is the best tool for the engineer to use to make the prototype's surface smooth?
- An engineer constructs a prototype from wood 
- The engineer needs a tool to smooth the surface of the wooden prototype 
- Sandpaper is used to smooth the surface objects 
- A prototype is a kind of object 
- Sandpaper is a kind of tool for smoothing objects