The correct answer is Option 4: 1, 2 and 3.

The UN-REDD+ Programme, which stands for Reducing Emissions from Deforestation and Forest Degradation, is a global initiative aimed at promoting sustainable forest management and reducing greenhouse gas emissions from deforestation and forest degradation in developing countries. Proper design and effective implementation of the UN-REDD+ Programme can have significant positive impacts on various aspects of sustainable development, including biodiversity protection, resilience of forest ecosystems, and poverty reduction, as explained below:

1. Protection of biodiversity: Forests are home to a significant portion of the world`s biodiversity, including many endangered species. Deforestation and forest degradation can lead to the loss of habitat, fragmentation of ecosystems, and loss of biodiversity. The UN-REDD+ Programme promotes sustainable forest management practices that prioritize the protection of biodiversity. By reducing deforestation and forest degradation, the UN-REDD+ Programme helps to conserve and protect biodiversity, including endangered species, and their habitats.

2. Resilience of forest ecosystems: Forests play a crucial role in maintaining the health and resilience of ecosystems. They act as carbon sinks, absorb and store water, regulate climate, and support livelihoods of local communities. Deforestation and forest degradation can disrupt these ecosystem services, leading to adverse impacts on local communities, biodiversity, and climate. The UN-REDD+ Programme promotes sustainable forest management practices that enhance the resilience of forest ecosystems, such as promoting reforestation, afforestation, and restoration of degraded forest lands. By doing so, the UN-REDD+ Programme helps to restore and maintain the ecological functions of forests, ensuring their long-term sustainability and resilience.

3. Poverty reduction: Forests are often a vital source of livelihoods for millions of people, especially in rural communities in developing countries. Forest-dependent communities rely on forests for food, fuelwood, timber, and other non-timber forest products. Deforestation and forest degradation can result in the loss of these resources and disrupt the livelihoods of local communities, leading to increased poverty and vulnerability. The UN-REDD+ Programme promotes sustainable forest management practices that prioritize the needs and rights of local communities, including indigenous peoples, and ensure their participation in decision-making processes related to forests. By promoting sustainable livelihoods and community-based forest management, the UN-REDD+ Programme contributes to poverty reduction and supports the well-being of forest-dependent communities.

In conclusion, the proper design and effective implementation of the UN-REDD+ Programme can significantly contribute to the protection of biodiversity, resilience of forest ecosystems, and poverty reduction. Therefore, Option 4: 1, 2 and 3 is the correct answer.