Question

Which river is the longest river in the world?
A. Amazon river
B. Yellow river
C. Mississippi river
D. Nile River

Answer 1

Hint: It is in Africa with 4130 miles long length.It has two prominent tributaries.

Complete answer:
Option A: It is in South America with 4086 miles long length.It is the second longest river in the world.It is the largest river in the world by discharge volume of water.The origin of the river can be traced to the Cordillera Rumi Cruz.Therefore, Option A is not the correct answer.

Option B: It is in China with 3398 miles long length.It is called yellow river for its colour,it is the result of huge amounts of loose sediments in the water.This massive river is also known as the Huang He.The ancient Chinese civilisation took around this river's basin.Therefore, Option B is not the correct answer.

Option C:It is located in United states with 3902 miles long length.The river system comprises of the Mississippi,Missouri and Jefferson rivers and is regarded as the world's fourth longest river system.It begins in northern Minnesota where Lake Itasca is believed to be the source of the river.Therefore, Option C is not the correct answer.

Option D:The Nile River is considered the longest river in the world.Lake Victoria is considered to be the source of the river.The blue and white Nile are the two tributaries of the river.It is known as the ‘Father of African rivers’.It flows northward through 11 countries from central to north east Africa.Therefore, Option D is the correct answer.

So, the correct answer is option D.

Note:There are 2 key factors to consider when trying to identify the longest river in the world namely-the source and the location of the river mouth because there is not always a clear cut answer to these two points,the length of the river only ever approximations.