What is the most common natural destination of rivers?

Correct answer: Sea lake or another river

The direct answer is B: sea, lake, or another river. A river is flowing water that moves downhill because of gravity. It usually begins at a source such as a spring, glacier, or highland area and travels through a channel. At its end, called the mouth, it commonly joins a sea, an ocean, a lake, or another river. Therefore, option B correctly describes the usual natural destination. Option A, desert fire, is not a water body and cannot be a river’s destination. Option C, the sky, is not the normal end of a river, although water can later evaporate during the water cycle. Option D, a mountain peak, is generally a source or highland area from which water flows, not the final destination. A river may also end in an inland basin, but among the given choices B is clearly the best answer. Memory cue: source is where a river starts; mouth is where it joins another water body.