Assignment task: The Five whys (or 5 whys) is an interrogative technique used to explore the cause-and-effect relationships underlying a particular problem. The primary goal of the technique is to determine the root cause of a defect or problem by repeating the question "Why?" five times. The answer to the fifth why should reveal the root cause of the problem.
Start by listing your first "why" question regarding your education trend of phenomenon, then list your second (more specific) "why" question, repeating these steps until you have 5 of them. Use the last "why" question as the basis of your argument.