Which one of the following is a part of the Congo Basin?

Answer: A. Cameroon is part of the Congo Basin. The Congo Basin is the drainage basin of the Congo River and its tributaries, covering approximately 3.7 million sq km across six Central African countries: - Democratic Republic of the Congo (largest share, about 60%) - Republic of the Congo - Central African Republic - CAMEROON (eastern and southern Cameroon drain into the Congo's northern tributaries) - Equatorial Guinea - Gabon Distractors fail by hydrology: (B) Nigeria drains into the NIGER Basin and the Niger Delta into the Gulf of Guinea. (C) South Sudan drains into the NILE Basin (White Nile system). (D) Uganda drains into the NILE Basin via Lake Victoria. Cameroon's northern parts drain to Lake Chad the southeast drains to the Congo system. Source: syllabus Fundamentals of Physical Geography / Britannica Congo Basin maps.