The main function of the executive branch is to enforce laws. This branch is responsible for implementing and administering the laws passed by the legislative branch. It is headed by the president at the federal level, who has the authority to ensure that laws are faithfully executed. The executive branch also includes various departments and agencies, each tasked with enforcing specific types of laws, managing government operations, and carrying out policies. This enforcement includes a wide range of activities, from overseeing law enforcement agencies to implementing regulations and administering public programs that align with legislative intent.
The other functions mentioned in the options relate to different branches of government: law interpretation is primarily the role of the judiciary, law-making falls under the legislative branch, and judicial functions involve the courts. Thus, the distinct role of the executive branch centers clearly on enforcement, making it critical to the functioning of the government and the application of laws.