Vùng chí tuyến có mưa tương đối ít, chủ yếu là do
Đáp án đúng là: A. các khu khí áp cao hoạt động quanh năm.
Giải thích:
Vùng chí tuyến thường có mưa ít do sự hoạt động của các khu khí áp cao quanh năm. Áp cao tạo ra điều kiện ổn định, không khí khô và ít mây, hạn chế sự hình thành mưa. Các yếu tố khác như dòng biển lạnh hoặc gió mùa có thể ảnh hưởng đến lượng mưa ở một số khu vực, nhưng không phải là nguyên nhân chính.
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