The correct answer is B. The action that provoked the United States bombing of Libya was a bombing in Berlin, Germany, carried out by Libyan-led terrorists.
The bombing of Libya was a military action carried out by the United States, composed of a series of air strikes against the African country that took place on April 15, 1986.
The operation was carried out in response to the terrorist attack against a nightclub in Berlin, 10 days earlier. Libya alleged that it suffered civilian and military casualties, including the figure of some 100 people, including an adopted daughter of its main leader Muammar al-Gaddafi.