Tricking someone to reveal personal information, password, and other i formation that can compromise a security system is known as

Social engineering is manipulating someone to reveal personal information that can compromise a security system. The most common type of Social engineering is identity theft.

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.