How were state constitutions important to the writing of the u. s. constitution?

a.
small and large states came to the constitutional convention agreeing on how to set up a congress.

b.
none of the state constitutions contained guarantees of personal rights and freedoms.

c.
lessons learned in setting up state governments were in setting up the united states government.

d.
most states had learned that having a strong central government was a mistake.

The answer is C. The state constitutions before the US constitution made big mistakes. For example, before the US constitution, they created the Articles of confederation. It didn't have an executive branch, so they couldn't enforce/carry out laws. They didn't have a judicial branch, so they couldn't settle disputes between states. Also, they weakened the federal government by not allowing them to control taxes. The state government didn't have anyone to check on them, so they had high taxes. This caused a rebellion. This made government officials realize that they needed a stronger federal government. They then made the constitution