The delegates to the Constitutional Convention decided to:

A: Elect leaders to represent them in congress.

B: Declare independence from Great Britain.

C: Replace the articles of confederation with an entirely new document.

D: Update the articles of confederation to include more states.

C. Replace the Articles of Confederation with an entirely new document.

The initial purpose of the Constitutional Convention was to revise to existing Articles of Confederation, after much debate it was decided that they would create a new document that gave more power to the national government. So they created the U. S. Constitution that we still use today.