Answer:
D) Judicial power​
Step-by-step explanation:
Judicial power is the power that the judicial branch excercises when it interprets the law. In other words, the judicial branch does not make nor execete the law, it interprets existing law, on the basis of the constitution, and of the previos opinions of other judges, which is what distinguishes the U.S. common law system from the civil law systems of many other countries.
When the Supreme Court determined that the segregation of public schools violated an amendment of the Constitution, it simply interpreted the segregation laws of several U.S. and the time on the basis of the U.S. Constitution, and determined the inconstitutionality of those laws.