What is the purpose of sustainable development ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Sustainable Development**: Sustainable development is a concept that aims to meet the needs of the present without compromising the ability of future generations to meet their own needs.

2. **Purpose 1 - Meeting Basic Human Needs**: The first purpose of sustainable development is to encourage growth that addresses current basic human needs. This includes access to resources such as food, water, shelter, and education, ensuring that all individuals can lead a decent quality of life.

3. **Purpose 2 - Preservation for Future Generations**: Alongside meeting current needs, sustainable development emphasizes the importance of preserving natural resources and the environment for future generations. This ensures that future populations have access to the same resources that we do today.

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