Respuesta :
Answer:
c. A National Geographic study
Explanation:
The most thorough and trustworthy source for information on the African savannah would almost certainly be from the National Geographic website on wildlife studies.
National Geographic is a scientific magazine that provides not only the information mentioned in the featured article, but also a great quantity of background information on the savannah that probably would include climate, landforms, environmental challenges, human interaction with wildlife, and the political situation.