Read the line from president Reagan’s Adress at Moscow state university. Go into any schoolroom and there you will see children being taught certain unalienables rights among them life liberty and the pursuit of happiness.
What is the purpose of this line?
O to entertain readers with a story about children
to inform readers about American schools
O to instruct readers in educational techniques
O to persuade listeners of the importance of freedom

Life, Liberty and the pursuit of Happiness" is a common phrase in the Declaration of Independence of the United States. The phrase consist of three main rights of every individual which are:

• Right to life: This simply means the right for one to be alive. Every life matters and we are all equal and the government should always be there to protect every lives.

• Right to liberty: This is the right fir one to have freedom to do whatever he or she wants. We should be free to make our own choices. We can choose to become whatever we want to be come and no one should rent us such right.

• Right to pursuit of happiness: Happiness is when ones heart feels satisfied, it's as sense of gratitude, joy and freedom.

Therefore, the purpose of the line as explained in the question is to persuade listeners of the importance of freedom.