The correct answer is 3. American involvement led to a protracted war for the Soviet Union that ultimately aided in an economic collapse.
Washington’s actions during the war were aimed at making Soviets’ experience in Afghanistan as painful and brief as possible, but instead, ten years of insurgency were necessary before the final withdraw, resulting in millions of lives lost and billions of dollars spent. Consequently the shattered country left behind became breeding ground to the Taliban growth, which would later provide Osama bin Laden a training base for terrorist operations worldwide.