Option A, it allowed for government to enforce laws and settle disputes is the right answer.
The colonies of the United States did not want to have a strong centralized government, because they did not want the government to become a tyranny. Hence, they did not even provide the national government with some very significant powers such as the power of issuing money, imposing taxes, enforcing laws etc.
Constitution fixed this problem by giving more power to the Federal government. The new government adopted the system of checks and Balances.This system was developed by the framers of the constitution to prevent the actions of the other branches from becoming powerful. Hence, all the three branches ( the Legislative, the Executive and the Judicially) of the system are induced to share power.