What is the main function of the executive branch as per the separation of powers?

The primary function of the executive branch, according to the principle of separation of powers, is to enforce and implement the laws created by the legislative branch. This branch is responsible for carrying out the laws and policies of the government, ensuring that they are executed effectively and efficiently. The executive branch is led by the President at the federal level and includes the various departments and agencies that administer the laws and regulations.

In addition to enforcing laws, the executive branch also has responsibilities related to national defense, foreign affairs, and conducting executions of policies that influence the daily lives of citizens. This enforcement role is crucial to maintaining order and ensuring that the legislation passed by Congress is put into action.

The other options do not accurately characterize the main function of the executive branch. Legislation pertains primarily to the legislative branch, judicial review is the responsibility of the judicial branch, and public opinion management does not specifically align with the defined powers of any branch under the separation of powers.