Which of the following statements is true about life in the Sahel?

A. Which of the following statements is true about life in the Sahel?

B. Which of the following statements is true about life in the Sahel?

C. The Sahel is rapidly expanding.

D. Low birthrates cause a scarcity of food and farmland.

I believe it's this: Drought is a constant threat due to unpredictable rains.

Your question is not properly written But I hope I will answer it in a best way.

Threat in drought will be its answer.

Drought refer to a condition in which an area have a below average precipitation due to lack of water which could last for years. It's very rare to receive rainfall in Sahel area. Which is why it often receive drought.