Which one among the following rivers is the longest?
A
Amazon
B
Amur
C
Congo
D
Volga
Correct Answer: Amazon
The Amazon is considered the world's largest river by volume, but scientists have believed it is slightly shorter than Africa's Nile. The Brazilian scientists' 14-day expedition extended the Amazon's length by about 176 miles (284 kilometers), making it 65 miles (105 kilometers) longer than the Nile.