A language isolate is a natural language that has no demonstrable genetic relationship with any other known natural language. This means it is not proven to be related to any other language, living or extinct, past or present.
Based on the definition in linguistics, a language isolate is unique because its origins and relationships to other languages cannot be traced. Therefore, the defining characteristic is the lack of known relationship to any other language family.
The correct option is: are not known to be related to any other languages.
Given the Hindi and English words below, which one of the options is the reason for their similarity?
| Hindi | /$\underline d$o:/ 'two' | /pǝ$\underline t^h$/ 'path' |
| English | /tu:/ 'two' | /pa: $\theta$ / 'path' |
| X | Y |
| P. Alphabetic | i. Hiragana |
| Q. Abugida | ii. Roman |
| R. Logographic | iii. Devanagari |
| S. Moraic | iv. Chinese |