The correct answer is C.
The Nile is the longest river in the world ( 4,130 miles ).
It flows in northeastern Africa and through eleven countries.
The Nile has two major tributaries: The White Nile and the Blue Nile.
The White Nile is the primary stream of the river. It flows out of the Lake Victoria, one of the African Great Lakes.
The Nile river is the only outflow from the Lake Victoria and it exits the lake near Jinja, Uganda. It makes the Lake the principal source of the longest branch of the Nile river.