Correct Option: B. Selective logging and maintaining forest cover Detailed Explanation: Why Option B is Correct: Selective logging is a forestry practice that involves the careful removal of specific trees while leaving the majority of the forest intact. This method is effective in promoting sustainable forest management for several reasons:

1. Preservation of Ecosystem Integrity: By only removing certain trees, selective logging helps maintain the overall structure and function of the forest ecosystem. This means that the habitat for various species is preserved, which is crucial for biodiversity.
2. Soil Conservation: Maintaining forest cover helps protect the soil from erosion. Tree roots stabilize the soil, and the canopy reduces the impact of rainfall, which can wash away topsoil. This is particularly important in preventing land degradation.
3. Carbon Sequestration: Forests play a vital role in absorbing carbon dioxide from the atmosphere. By maintaining forest cover through selective logging, we ensure that trees continue to sequester carbon, which is essential in combating climate change.
4. Sustainable Timber Production: Selective logging allows for the sustainable harvesting of timber. This means that forests can continue to provide wood products without being completely depleted, ensuring a continuous supply for future generations.
5. Economic Benefits for Local Communities: Selective logging can provide economic opportunities for local communities through sustainable timber harvesting, which can be more profitable in the long run compared to clear-cutting.

Why the Other Options are Wrong or Weaker: Option A: Clear-cutting of forests for agricultural expansion - Destruction of Ecosystems: Clear-cutting involves removing all trees in a specific area, which leads to the complete destruction of the forest ecosystem. This practice results in loss of biodiversity, habitat destruction, and increased soil erosion. - Short-term Gains vs. Long-term Losses: While clear-cutting may provide immediate land for agriculture, it often leads to long-term environmental degradation, making the land less productive over time. Option C: Planting non-native species to enhance biodiversity - Invasive Species Risks: Planting non-native species can lead to the introduction of invasive species that may outcompete native flora and fauna, disrupting local ecosystems and reducing biodiversity rather than enhancing it. - Lack of Adaptation: Non-native species may not be well adapted to local conditions, which can lead to poor growth and survival rates, ultimately failing to support the ecosystem. Option D: Ignoring local community involvement in forest management - Disregarding Local Knowledge: Local communities often have valuable knowledge about sustainable practices and the local ecosystem. Ignoring their involvement can lead to ineffective management strategies that do not consider the ecological and social context. - Conflict and Resistance: Excluding local communities can lead to conflict over land use and resource management, which can undermine conservation efforts and lead to increased deforestation. Summary:

• Selective logging promotes sustainable forest management by preserving ecosystems and maintaining forest cover.
• It supports biodiversity, soil conservation, and carbon sequestration.
• Other options like clear-cutting and planting non-native species can lead to environmental degradation and loss of biodiversity.
• Community involvement is crucial for effective forest management and conservation efforts.

This understanding of sustainable practices is essential for anyone studying agricultural science and preparing for professional exams in this field.