- Planting crops is a kind of activity
- Planting is a kind of human action
- Hence, planting crops is a kind of human activity

- Planting crops is a kind of human activity
- Planting crops requires growing crops
- Therefore, growing crops is a kind of human activity

- Soil contains nutrients for plants
- A plant / living thing requires nutrients to grow
- Hence, a plant requires nutrients in soil to grow

- A plant requires nutrients in soil to grow
- Crops are a kind of edible plant for eating
- Hence, crops require nutrients in soil to grow

- Crops require nutrients in soil to grow
- If something requires something else then that something relies on that something else
- Therefore, crops rely on nutrients in soil to grow

- Crops rely on nutrients in soil to grow
- High quality / rich / good soil has a high number of nutrients / amount of nitrogen
- Hence, crops rely on high quality soil to grow

- Growing crops is a kind of human activity
- Crops rely on high quality soil to grow
- Hence, growing crops is a kind of human activity that relies on high quality soil to grow

So, growing crops is a kind of human activity that relies on high quality soil to grow
Q: Which of these human activities most relies on high-quality soil?
Context:
- High quality / rich / good soil has a high number of nutrients / amount of nitrogen 
- Planting crops is a kind of activity 
- Soil contains nutrients for plants 
- A plant / living thing requires nutrients to grow 
- If something requires something else then that something relies on that something else 
- Planting crops requires growing crops 
- Planting is a kind of human action 
- Crops are a kind of edible plant for eating