Answer:
b. It divides the central government into three branches and shares power with the state governments.
Step-by-step explanation:
The government is divided into three branches:
1. The legislative power which is in charge of making new laws and modifying existing ones.
2. The executive power which is in charge of enforcing the laws and corresponds to the figure we know as a president.
3. The judicial power which has the power to decide if a law has been broken or not and has the power to dictate punishment in cases where it deems necessary.
The system of checks and balances makes sure that these three branches work smoothly and avoids one branch from having more power than the others.