Felis rufus is the obsolete taxonomix name for the bobcat. It is now called lynx rufus and is closely related to the other three species of lynx.
The best option would be the letter A. They supply freshwater to support life on Earth.
Freshwater is the ultimate source of water in the terrestrial biome. It is not only important in the terrestrial biome but also in the aquatic ecosystem as it helps in transporting nutrients (ex. river is connected to the ocean).
