The Sahel is a semi-arid region that stretches across the width of Africa just south of the Sahara Desert. Based on your description:
- Oval A is near Spain and Portugal (this is the Atlantic coast and not the Sahel).
- Oval B is around the middle of Africa (could possibly include the Sahel).
- Oval C is near Egypt (this is further north and near the Sahara).
- Oval D is around the Saudi Arabian peninsula (this is not in Africa).
Given this information, the best answer would be:
B. oval B