The Sahel region in Africa is:

Explanation

The Sahel is best understood as a climatic transition zone, not as a single country or landform. It is a semi-arid belt running across Africa south of the Sahara, from Senegal to Sudan, with exposure to desertification, drought and food insecurity. Food and Agriculture Organization of the United Nations (FAO), Unasylva frames the geographic Sahel as extending from the Sahara towards the tropical humid zone and places the Sudano-Sahelian region in dry savannah conditions. That is why option C is the precise choice: it captures both the location and the ecological character of the Sahel as the zone between the Sahara and savanna-type environments.

Why the other options are wrong

• (A) A rainforest is humid and densely forested, whereas the Sahel is a semi-arid belt linked with drought, dry savannah conditions and desertification.
• (B) A coastal region is defined by its contact with the sea, while the Sahel is a belt across Africa south of the Sahara, from Senegal to Sudan, not Africa's coastline.
• (D) A mountain range is a linear relief feature, but the Sahel is an agroclimatic and ecological transition zone rather than a chain of mountains.

Concept

This tests world climatic regions, especially the relationship between deserts, savannas and transition belts. RAS repeats such map-linked regions because they connect physical geography with drought, desertification and livelihood stress.

Source

• Food and Agriculture Organization of the United Nations (FAO), Unasylva

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