Identify some of the major ‘sound protocols’ present in the hearing world and give a brief explanation (one or two sentences) as to why such practices are followed or encouraged and when it’s instead considered okay to ignore such etiquettes.

Is there any answer choices ?

The correct answer in this question  is option c. people in mountainous areas tend to be more isolated from other populations. this is the reason why their local languages do not spread. farming is their  one way of living among the highlanders.