Wangari Maathai, the Nobel Prize winner from Kenya, is known for her significant contribution to sustainable development. Option 3: Sustainable development is the correct answer.

Wangari Maathai was an environmental and political activist who dedicated her life to promoting sustainable development, women`s rights, and democracy. She founded the Green Belt Movement in 1977, which focused on tree planting, environmental conservation, and women`s empowerment. Through this movement, Maathai aimed to address the issues of deforestation, soil erosion, and lack of access to resources, particularly affecting rural communities in Kenya.

One of Maathai`s major accomplishments was the planting of millions of trees across Kenya. The Green Belt Movement encouraged local communities, particularly women, to actively participate in reforestation efforts. By planting trees, they not only helped combat deforestation and soil erosion but also improved local ecosystems, provided shade, preserved biodiversity, and created sustainable sources of fuel and food.

Maathai`s work went beyond environmental conservation. She recognized the interconnectedness between environmental sustainability, social justice, and democracy. She advocated for women`s rights, empowering them through education, income-generating activities, and leadership training. By involving women in environmental initiatives, Maathai recognized their potential as agents of change and their crucial role in sustainable development.

In 2004, Wangari Maathai became the first African woman to be awarded the Nobel Peace Prize for her contribution to sustainable development, democracy, and peace. The Nobel Committee recognized her as an example of an individual who had taken a holistic approach to sustainable development, addressing both environmental and social issues.

Wangari Maathai`s legacy extends far beyond her native Kenya. Her work has inspired countless individuals and organizations around the world to take action for environmental sustainability and social justice. Her emphasis on the importance of grassroots movements, community involvement, and the empowerment of women continues to resonate globally.

In conclusion, Wangari Maathai`s remarkable contributions and recognition as a Nobel Prize laureate highlight her significant impact in the field of sustainable development.