Final answer:
Bermudagrass is native to Africa and is part of the ecosystem that supports animals like zebras and wildebeest.
Step-by-step explanation:
The native grass to Africa among the options provided is Bermudagrass (Cynodon dactylon). Bermudagrass originated in Africa and functions as an essential part of the ecosystem. Inhabitants of African savannas, such as zebras and wildebeest, thrive in environments with grasses like Bermudagrass because they can graze on different parts of the plant effectively.