In political philosophy, an agreement or a treaty whereby free individuals abandon their natural state and establish a civil society, or the country, to protect their natural rights. More broadly, the theories that ground a political community on the explicit or implicit consent of individuals. Therefore, these are the circumstances in which an individual, with the support of an organized society, strives for a quality organization of his or her own life, and contributes to a positive and healthy environment and the environment in which he or she lives.
The Sahara is a desert located in northern Africa (as you can see in the map). And one of the only answer countries in proximity to that desert is Mali, so the answer would be C.