The correct option highlights that biodiversity is integral to various ecological processes that sustain human life. Soil formation and prevention of soil erosion ensure the fertility and stability of the land necessary for agriculture, while the recycling of waste maintains ecosystem health and nutrient availability. Additionally, the pollination of crops, largely facilitated by diverse species of insects and animals, is critical for food production. Each of these processes underscores the interconnectedness of biodiversity and ecosystem services in supporting human existence and sustainable development, aligning with the principles outlined in standard UPSC reference materials.