According to the article how does scarcity impact choices for individuals?

From the standpoint of geography,a is an internal rendering of an individual's known world

Afootpath is to be constructed in a park in the shape of a parallelogram. when a coordinate plane is laid over a map of the park, the vertices of the footpath are (-4,2) (8,2) (11,7) and (-1,7). what is the perimeter of this path

In a class of 20 students, what democratic form of governance makes the most sense