Choose the word (a, b, c, or d) that best fits each of the blank space

Choose the word (a, b, c, or d) that best fits each of the blank spaces. The Nile (Question 21) ____ in a stream which flows (Question 22) _____ Ruanda into Lake Victoria. (Question 23) _____ it leaves Lake Victoria, the river is known (Question 24) __ the White Nile and flows through the Sudan. (Question 25) ____ north it becomes the Nile and (Question 26) ____ through Egypt past Cairo into the Mediterranean Sea. Question 21.