What is the term for the process of 'Linguistic Paleontology' where researchers use vocabulary evidence to infer the culture and environment of a reconstructed protolanguage?

1. ক
   Lexicostatistics
   
2. খ
   Glottochronology
   
3. গ
   Wörter und Sachen
   
4. ঘ
   Substratum theory