6. Of all the climatic regions of Africa, the one with the highest rainfall variability is: \( \begin{array}{l}\text { A. Highland climatic region } \\ \text { B. Mediterranean climatic region } \\ \text { C. Warm temperate continental climate } \\ \text { D. Desert climatic region } \\ \text { E. Equatorial climatic region } \\ \text { 48 }\end{array} \)

To determine which climatic region of Africa has the highest rainfall variability, let's analyze the characteristics of each option: A. **Highland climatic region**: This region can experience significant rainfall variability due to altitude changes and local weather patterns. B. **Mediterranean climatic region**: This region typically has a wet winter and dry summer, leading to moderate rainfall variability. C. **Warm temperate continental climate**: This climate can have variable rainfall, but it is generally more stable compared to other regions. D. **Desert climatic region**: Deserts have very low and consistent rainfall, leading to low variability. E. **Equatorial climatic region**: This region generally experiences high and consistent rainfall throughout the year, resulting in low variability. Based on this analysis, the **Highland climatic region** (Option A) is likely to have the highest rainfall variability due to its diverse topography and the influence of altitude on weather patterns. Thus, the answer is: **A. Highland climatic region**.