What is the primary emphasis of Substantive Due Process?

The primary emphasis of Substantive Due Process is on the reasonableness of governmental actions and laws. This principle is concerned with whether the government has a legitimate justification for its laws and actions that can affect individual rights. It ensures that laws do not infringe upon fundamental rights without sufficient justification or a compelling state interest. The focus is on the content of the laws and the impact on individual liberties, rather than just the procedures used to enforce those laws.

In contrast, other options deal with different aspects of legal processes. For example, one option addresses the procedures used in legal processes, which pertains more to Procedural Due Process. Another discusses the speed of government interactions, which is not a fundamental aspect of Substantive Due Process. Lastly, equal treatment in legal proceedings relates more closely to concepts of equal protection under the law rather than the substantive analysis of legal rights and governmental restrictions.