Which court found that Turkey violated Articles 2, 3, and 14 of the European Convention on Human Rights?

The European Court of Human Rights is the correct choice because this court specifically addresses violations of the European Convention on Human Rights, to which Turkey is a state party. The court examines complaints about breaches of the rights guaranteed by the Convention, which includes Articles 2 (the right to life), 3 (the prohibition of torture and inhuman or degrading treatment), and 14 (the prohibition of discrimination). Several cases have seen the Court find that Turkey violated these articles, often in the context of issues related to political repression, treatment of detainees, or discrimination against minority groups.

The other options do not deal with the European Convention on Human Rights, as they focus on different jurisdictions or mandates. The Inter-American Court deals with human rights issues specific to the Americas, the International Criminal Court is aimed at prosecuting individuals for serious international crimes like genocide and war crimes, and the United Nations Human Rights Council addresses broader human rights issues on a global scale but does not issue binding judgments on specific member states like the European Court does. Therefore, the European Court of Human Rights is the appropriate venue for cases involving Turkey and the cited articles.