Fact 1: Sharpening an object causes that object to change shape.

Fact 2: Each stone incorporates a groove for sharpening pointed objects such as fish hooks and darts.

Given the two facts above, answer the question "what can be done to stones?" with the following options: 
- heat
 - Bend
 - reshaped
 - erosion
 - Relieve pain
 - protect them
 - kill them
 - loose soil


 

   reshaped      