Which of the following was a weakness of the Articles of Confederation that made it extremely difficult for the national government to pass laws?

A A strong legislative branch and no executive or judicial branches

B Each state had its own currency.

C One vote per state no matter the size of the state's population

D Approval of 9 of the 13 states required to pass laws.

D Approval of 9 of the 13 states required to pass laws.