I believe that would be C.
A noise that produces an echo when it bounces off a distant wall.
Answer:
Cartel
Explanation:
According to sociology, a cartel is a formal group that is formed to make price decisions on a product or service. In other words, a cartel is a organization that is created from a formal agreement between producers of a product or service with the objective of regulate their supply or manipulate the prices and therefore, limiting the competition by controlling the production, distribution and pricing of the service they do. So, a cartel is an agreement between commercial enterprises.
Answer: Adolescent Egocentrism.
Explanation: Whereas kids think that everyone is looking at them, talking about them, staring at their flaws, etc.