B. Creating synthetic materials enables humans to reduce their use of nonrenewable resources by exclusively using renewable resources.
Scientists often create synthetic materials to develop alternatives that are more sustainable and reduce reliance on nonrenewable resources. This approach helps mitigate the environmental impact of resource extraction and consumption while promoting long-term sustainability. While other options listed may also have their merits, option B directly addresses the idea of sustainability and resource conservation, which is a common goal in scientific research and development.