Read the excerpt from the fourteenth amendment of the united states constitution.

[n]or shall any state deprive any person of life, liberty, or property, without due process of law.

this clause ensures that

anyone can enforce the law as long as they are citizens.
all states follow similar rules and legal processes.
any state can deprive its citizens of due process.
all non-citizens are not covered by due process.

B All states follow similar rules and legal processes

The Fourteenth Amendment of the United States Constitution ensures that all states follow similar rules and legal processes.

Explanation:

The Fourteenth Amendment to the Constitution of the United States is one of the post-Civil War amendments, and includes, among others, the Due Process Clause and the Equal Protection Clause. It was proposed on June 13, 1866, and ratified on July 9, 1868.

The amendment provides a broad definition of national citizenship, which overrides the decision of Dred Scott v. Sandford (1857), which had excluded slaves and their descendants from possessing constitutional rights. It requires states to provide equal protection before the law to all persons (not just citizens) within their jurisdictions. The importance of the Fourteenth Amendment was exemplified when it was interpreted to prohibit racial segregation in public schools in the case Brown v. Board of Education.

fourteenth amendment