Answer: a.) Congo
Explanation: The CONGO river’s drainage basin includes areas both north and south of the equator. Its flow is stable because there is always a rainy season somewhere along the river.
At EVERY point on Earth . . . North of the equator, South of the equator, at the poles, or exactly ON the equator . . . the lengths of days and nights change with the seasons. (probably supposed to be <em>choice-3</em>)
