What is the main responsibility of Parliament in the law-making process?

The main responsibility of Parliament in the law-making process is creating, amending, and repealing laws. This function is central to the role of Parliament, which operates as the legislative body within a government. Members of Parliament (MPs) debate proposed laws, which are known as bills, and vote on whether to enact these proposals into law. This process includes examining existing laws to determine if changes are necessary, leading to amendments or repeals of laws that may no longer serve their intended purpose or that need updates in response to societal changes.

In contrast, interpreting the law is primarily the role of the judiciary, where courts assess and clarify laws through legal rulings. Enforcing laws at the state level typically falls under the purview of law enforcement agencies and executive branches, not Parliament itself. Reviewing international treaties is typically undertaken by governments and relevant departments but is not a core function of Parliament regarding domestic law-making. Thus, the creation, amendment, and repeal of laws encapsulate the fundamental legislative power that Parliament wields, making this the correct answer.