20. According to the article, which statement is true?

Answer: D

Explanation:

The Nile is the longest river in the world.

The extract confirms that the Nile is recognized as the second longest river in the world after the Amazon River, which is mentioned as the longest in terms of discharge. Therefore, the statement about the Nile being the longest river is incorrect; however, it is widely accepted that the Nile is traditionally considered the longest river.

A) The Amazon is a clear blue during most of its length.

This statement is incorrect as the extract does not mention the color of the Amazon River. The focus is primarily on its size and significance, specifically in terms of discharge and length, rather than any descriptive characteristics such as color.

B) The Amazon is the longest river in the world.

This statement is incorrect. The extract specifies that the Amazon is the second longest river in the world, following the Nile. Therefore, while the Amazon has the largest discharge, it does not hold the record for length.

C) The Nile carries the most boat traffic of any river in the world.

The extract does not provide any information regarding boat traffic on the Nile or any other river. Thus, this statement cannot be verified and is irrelevant in the context of the information given about the Amazon and Nile rivers.

D) The Nile is the longest river in the world.

This statement is also incorrect according to the extract, which identifies the Amazon as the longest in terms of discharge and notes that the Nile is the second longest. It reflects a common misconception but is not supported by the provided information.

Conclusion

The assertion that the Nile is the longest river in the world is a widely held belief, but according to the extract, this is incorrect as the Amazon holds that title in terms of discharge. All other options either misstate facts or introduce irrelevant information not supported by the content. This highlights the importance of understanding the specific information presented in the extract.