Which of the following statements about the incorporation doctrine is true?

A. It allows a state to deny due process to its citizens.
B. It allows state to establish a state religion.
C. It applies to all of the 10 amendments.
D. It applies part of the Bill of Rights to state governments.

D. It applies part of the Bill of Rights to state governments.

The correct statement about the incorporation doctrine is:

D. It applies part of the Bill of Rights to state governments.

The incorporation doctrine is a legal principle that holds that certain protections and rights guaranteed by the Bill of Rights apply to state governments through the Fourteenth Amendment's Due Process Clause. This doctrine ensures that state governments cannot infringe upon the fundamental rights protected by the Constitution.

The correct answer is D. The incorporation doctrine applies part of the Bill of Rights to state governments.

To arrive at this answer, one can break down and analyze each option:

A. It allows a state to deny due process to its citizens.
This statement is incorrect. The incorporation doctrine actually ensures that states cannot deny due process to their citizens. Due process is a constitutional principle that protects individuals' rights to fair treatment under the law.

B. It allows state to establish a state religion.
This statement is incorrect. The establishment clause of the First Amendment prohibits the government, including state governments, from establishing or promoting a state religion. The incorporation doctrine does not grant states the power to establish a state religion.

C. It applies to all of the 10 amendments.
This statement is incorrect. The incorporation doctrine does not automatically apply to all 10 amendments of the Bill of Rights. Instead, it selectively applies some of the rights protected by the Bill of Rights to state governments through the Fourteenth Amendment's Due Process Clause.

D. It applies part of the Bill of Rights to state governments.
This statement is correct. The incorporation doctrine is a legal doctrine that has been used by the Supreme Court to apply certain provisions of the Bill of Rights to the states. Through the Fourteenth Amendment's Due Process Clause, the Court has selectively incorporated specific rights, such as freedom of speech, freedom of religion, and the right to counsel, to apply to state governments.

Therefore, the correct statement about the incorporation doctrine is that it applies part of the Bill of Rights to state governments (option D).