Explanations:In a constitutional democracy, the judiciary plays a crucial role as the guardian of the constitution and the defender of fundamental rights. The judiciary is the branch of government that interprets the constitution and ensures that laws and actions of the government comply with it. This role is essential for maintaining the rule of law and protecting the rights of citizens.
The judiciary's role as a guardian of the constitution is based on the principle of judicial review. Judicial review is the power of the courts to examine the constitutionality of laws and actions of the government. If a law or action is found to be in violation of the constitution, the judiciary can declare it unconstitutional and invalidate it. This power ensures that the government operates within the limits set by the constitution and that the rights of citizens are protected.
The legislative branch, which is responsible for making laws, and the executive branch, which is responsible for enforcing laws and managing the day-to-day operations of the government, do not have the authority to interpret the constitution or protect fundamental rights. These roles are reserved for the judiciary. The legislative branch can propose and pass laws, but it is the judiciary that ensures these laws are in line with the constitution. The executive branch can enforce laws, but it is the judiciary that ensures these laws are constitutional and that the rights of citizens are not violated.
Therefore, the judiciary is the correct answer because it is the branch of government that interprets the constitution and ensures that laws and actions of the government comply with it. It acts as a guardian of the constitution and a defender of fundamental rights, making it essential for the functioning of a constitutional democracy.