- An example of breaking something down is scratching something
- A material that is soft can be broken down by a material that is hard
- Therefore, a material that is soft can be scratched by a material that is hard

- A material that is soft can be scratched by a material that is hard
- A mineral is a kind of material
- Hence, if one mineral can scratch another mineral then that other mineral is softer than that one mineral

- If one mineral can scratch another mineral then that other mineral is softer than that one mineral
- Hardness is a measure of a mineral 's ability to resist scratching
- So, measuring the hardness of minerals requires scratching those materials

Hence, measuring the hardness of minerals requires scratching those materials
Question: Which of the following actions is most likely part of a test to find the hardness of a mineral sample?
Context: - A mineral is a kind of material 
- Hardness is a measure of a mineral 's ability to resist scratching 
- An example of breaking something down is scratching something 
- A material that is soft can be broken down by a material that is hard