In 1976, Argentina was ruled by a military junta that led a "dirty war" against political opponents. Option B is correct.
The Dirty War refers to the period of United States-backed state terrorism in Argentina from 1974 to 1983 as a part of Operation Condor, during which military and security forces as well as right-wing death squads in the form of the Argentine Anticommunist Alliance (AAA, also known as Triple A) hunted down any political dissidents and anyone believed to be related to socialism, left-wing Peronism or the Montoneros movement.
The name dirty war was implemented by the military junta or civic-military dictatorship of Argentina.
