- Brown is a kind of color
- Color of the soil can be used to indicate the soil component
- High humus content causes the soil to be brown
- Therefore, if the soil has high humus content, then the soil will be brown in color

Therefore, if the soil has high humus content, then the soil will be brown in color
Question: Humus is an organic material that makes up soil. Which characteristic best indicates that soil has a high humus content?
Context: - Brown is a kind of color 
- Color of the soil can be used to indicate the soil component 
- High humus content causes the soil to be brown