Correct Option: B. Implementing selective logging and maintaining buffer zones Detailed Explanation: Why Option B is Correct: 1. Selective Logging: This practice involves the careful removal of certain trees while leaving others standing. This method helps to maintain the overall structure and function of the forest ecosystem. By not removing all trees at once, selective logging allows for the preservation of habitats for various species, thus supporting biodiversity. It also helps in maintaining the genetic diversity of tree species, as different trees are left to reproduce.

1. Buffer Zones: These are areas of vegetation that are left intact around sensitive ecosystems, such as rivers, wetlands, or areas with endangered species. Buffer zones help to protect these sensitive areas from the impacts of logging and other human activities. They act as a barrier that can filter pollutants, reduce soil erosion, and provide habitat for wildlife. By maintaining these zones, forest management can ensure that biodiversity is preserved.
2. Sustainability: The combination of selective logging and buffer zones promotes sustainable forest management. This means that forests can continue to provide resources (like timber) while also supporting wildlife and plant diversity. Sustainable practices are essential for long-term ecological health and resilience.

Why the Other Options Are Wrong or Weaker:

• Option A: Clear-cutting large areas for timber production
• Explanation: Clear-cutting involves removing all trees in a designated area, which drastically alters the habitat and can lead to soil erosion, loss of wildlife habitat, and decreased biodiversity. This method can result in a monoculture, where only one type of tree is planted afterward, further reducing biodiversity. The immediate impact on the ecosystem is severe, making this option detrimental to maintaining biodiversity.
• Option C: Planting only commercially valuable tree species
• Explanation: While this practice may be economically beneficial in the short term, it leads to a lack of diversity in the forest. Planting only a few species can make the ecosystem vulnerable to pests and diseases that target those specific species. It also fails to support the variety of wildlife that depends on a diverse range of plants for food and habitat. This practice can lead to ecological imbalances and a decline in overall biodiversity.
• Option D: Allowing unrestricted access to all forest areas for recreational use
• Explanation: While recreational access can promote appreciation for forests, unrestricted access can lead to habitat destruction, soil compaction, and disturbance to wildlife. Overuse of certain areas can result in erosion and degradation of sensitive habitats. Without management and restrictions, recreational activities can negatively impact biodiversity rather than support it.

Summary:

• Selective logging preserves tree diversity and habitat, supporting wildlife.
• Buffer zones protect sensitive areas and enhance ecosystem resilience.
• Clear-cutting and planting only commercially valuable species harm biodiversity.
• Unrestricted access can lead to habitat degradation and loss of species.

By focusing on selective logging and maintaining buffer zones, forest management can effectively support and enhance biodiversity, ensuring that ecosystems remain healthy and resilient for future generations.