The correct answer is A) lefties rebels and land-owning elites.
The statement that best identifies the parties involved in the civil conflict in Guatemala, El Salvador, and Nicaragua in the 1950s through the 1980s is "lefties rebels and land-owning elites."
Central America represents a constant area of conflict since the 1950s. Struggles between wealthy landowners and poor peasants in Guatemala, Honduras, El Salvador, and Nicaragua had created tensions and conflicts that have derived in war. The Guerrilla in Nicaragua, the Mara Salvatrucha in El Salvador, rebellions in Guatemala, are the result of economic inequity and political decision that favored the rich. Poverty is so high in Central America that many people have decided to abandon their native countries to emigrate to the United States, hoping to find better life opportunities.