What is the formal title of the legal mechanism, used by the Supreme Court, that allows any citizen to challenge the constitutionality of a law, treaty or regulation, introduced in the 1994 judicial reform?

• A Accion de inconstitucionalidad ✓
• B Juicio de amparo
• C Controversia constitucional
• D Recurso de revision

The accion de inconstitucionalidad permits a qualified minority of legislators, the Attorney General or political parties to challenge laws in the abstract without a concrete case.