Nile is the longest river in the world
A
Correct answer
Explanation
The Nile River is approximately 6,650 kilometers long and has traditionally been considered the longest river in the world. The Amazon River is very close in length (about 6,400 kilometers), and some recent measurements suggest it might be longer depending on how the source is defined. However, in most standard geographical references and textbooks, the Nile is listed as the longest.