Of the following the most common concern the unmarried teenage mothers face is

How to take care of their future (the mothers and the child's) financially. Because when a teenager becomes a mother, and is unmarried, they have concerns about how they will afford to do the rest of their schooling to get a job to sustain themselves and their child.

Non entendo camiñar a través deste idioma

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.