What are characteristics of a tragic drama

Tragic drama usually revolves around a main character who sticks to his ideals, and doesn't want to conform to the society. This is why it always ends tragically because he doesn't change so as to conform. The main character will usually die remaining loyal to his beliefs, which causes the audience to realize what a great person the protagonist is, as his beliefs are usually related to something positive or good for the society.

The correct answer is voluntary exchange in which the skilles are exchanged for money on a voluntary basis. This is a private arrangement and in does not involve a contract.