Answer:
The correct answer is B. Africa.
Explanation:
The ten countries with the lowest development in the world, with regard to income, standard of living, and life expectation are:
Niger
Central African Republic
South Sudan
Chad
Burundi
Sierra Leone
Burkina Faso
Mali
Liberia
Mozambique, according to Human Development Index (HDI) 2018, published by United Nations Development Programme (UNDP). All those countries are located in Africa.