The correct answer is B. Luxembourg.
The European Court of Justice (ECJ) is the highest court in the European Union (EU). It is located in Luxembourg. The ECJ was established in 1952 by the Treaty of Paris. It is responsible for interpreting EU law and ensuring that it is applied correctly by the EU institutions and the member states. The ECJ has jurisdiction to hear cases brought by individuals, companies, and member states. It also has the power to give preliminary rulings on the interpretation of EU law.
The ECJ is composed of 27 judges, one from each member state. The judges are appointed by the member states for a renewable term of six years. The ECJ is assisted by eight advocates-general, who are appointed by the member states for a renewable term of six years. The advocates-general are responsible for giving independent opinions on the cases before the ECJ.
The ECJ has played a significant role in the development of EU law. It has interpreted EU law in a way that has promoted the integration of the EU. The ECJ has also played a role in protecting the rights of individuals and companies under EU law.
The ECJ is an important institution in the EU. It is responsible for ensuring that EU law is applied correctly and that the rights of individuals and companies are protected. The ECJ has played a significant role in the development of EU law and in the integration of the EU.
The other options are incorrect.
Option A is incorrect because the headquarters of the European Parliament are located in Strasbourg, France.
Option C is incorrect because the headquarters of the Council of Europe are located in Strasbourg, France.
Option D is incorrect because the headquarters of the Inter-American Court of Human Rights are located in San Jose, Costa Rica.