Answer:
B) obtaining enough food to feed over half of the total population
Step-by-step explanation:
The sub-Saharan part of Africa is mostly arid and semi arid in nature.
Due to the above climatic conditions, more than half the population there faces the problem of nutritional gap.
The inability to produce farm produce brings about nutritional problems such as malnutrition or natal lack of food which is indeed a fatality.
Therefore the main concern of a person living in this areas would be the need to obtain enough food to feed over half the total population.