Which feature of the is constitution directly addressed a problem of articles of confederation

The following are the choices I found on the internet:

A. The Constitution established a legislative branch to create national laws.

B. The Constitution created a government where each state was represented in Congress.

C. The Constitution created a federal government fully independent from Great Britain.

D. The Constitution created a federal government with three branches.

The answer would be letter D - The Constitution created a federal government with three branches. Each branch has distinct powers to carry out its responsibilities.