How many countries in sub-Saharan Africa are considered to have high levels of development?

A. None
B. One
C. Five
D. More than ten

Please select the best answer from the choices provided.

When there are advances in technology, such as the personal computer, how might business productivity change? a) productivity is separate from technological advances so there is no impact. the new technology can replace outdated, less efficient, machinery. o) the businesses' products will no longer be demanded. d) manufactured items will be made elsewhere.