You can cancel out A. And C. Out which leave two answers. D and B and considering buildings could be a way of adaption along with flood control systems. B makes the most sense.
C. Providing access to new technologies
Answer:
deforestation, development, and increased population.
Explanation:
The causes of environmental problems in Sub-Saharan Africa are deforestation, development, and increased population. As the country is aiming for development, its environmental status is impaired.