Under the Articles of Confederation, Congress had no power to make states enforce laws. Why was this a problem? The Congress could take over the state governments. The states could not work closely with Congress. It took away the importance of laws passed by Congress. It made the state governments unable to pass new laws.

I would say C. It took away the importance of laws passed by Congress.

Explanation:

Since under the Articles of Confederation, Congress had no power to make states enforce laws. They had no way to make the states obey as they made the Articles of Confederation very weak in order to make sure there was no "taxation without representation" again. Congress had no power to tax the states or regulate commerce. Basically if Congress tried to pass a law it meant pretty much nothing and the states wouldn't have to obey to it if they didn't want to, which means it took away the importance from the laws they passed.