What does the EDGE of Existence programme aim to protect?

The EDGE of Existence programme is specifically designed to focus on the conservation of unique species that are at a high risk of extinction. This initiative prioritizes species that are not only endangered but also have distinct evolutionary characteristics or are the last of their kind, often referred to as "evolutionarily distinct and globally endangered" (EDGE). By concentrating on such species, the programme aims to enhance biodiversity conservation efforts and protect those organisms that represent irreplaceable parts of the Earth's biological heritage.

The other options do not align with the primary objectives of the EDGE programme. For instance, while the conservation of fish species, urban animals, and managing invasive species is essential, these do not specifically capture the essence of protecting unique, evolutionarily distinct species that are on the brink of extinction. Hence, the focus remains on those critically endangered species that are scientifically significant and need immediate conservation efforts to prevent their extinction.