In the last paragraph, the author of the article claims that... 1. ...there is a natural borderline between different colours. 2. ...it is always easy to determine what colour an object is. 3. ...in some languages, there is one word for green and blue. 4. ...in Russian, Greek and Italian there are 12 basic colours.

In the last paragraph, the author of the article claims that... 1.  ...there is a natural borderline between different colours. 2.  ...it is always easy to determine what colour an object is. 3.  ...in some languages, there is one word for green and blue. 4.  ...in Russian, Greek and Italian there are 12 basic colours.