Based on historical records, Guardia Nacional was the El Salvadoran entity created to secure the coffee plantations.
This is because Guardia Nacional, a Spanish phrase for National Guard, was created in 1921 by the El Salvadoran government to guard and secure the coffee plantations.
The Guardia Nacional was also used to guard and secure rural areas in the country.
However, due to increasing complaints of human rights abuse and brutality, Guardia Nacional was disbanded by the El Salvadoran government in 1992.
Hence, in this case, it is concluded that the correct answer is option A. "Guardia Nacional."
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