Answer:
d. the Sahara desert forms a cultural barrier in Africa
Step-by-step explanation:
The vast Sahara certainly plays the role of a cultural barrier, blocking the North-South exchanges on that huge continent.
a. apartheid is the official policy of Africa : today? False, that ended in 1994.
b. Europe controls most of African nations today. No, at least not politically. China is a bigger player in Africa now than most European countries with massive investments. Most European colonies got their independence 50-60 years ago.
c. Africa is governed by the IMF IMF is an economic institution, it doesn't control or rule any country.