Answer:
Option A. Based on this excerpt, to prevent political instability was not a goal of the Marshall Plan.
Explanation:
On June 5th, 1947, Secretary of State George C. Marshall gave a speech to the Harvard Allumni Association in which he gave the outline of what would later be known as The Marshall Plan. The Marshall Plan was a U.S Program that provided economic aid to Western Europe after World War II.
As the excerpt from the speech shows, to prevent political instability was not a goal of the Marshall Plan, as one of the goals it had was to combat the spread of communism in Europe. The main goals of the programm was to secure the peace in the post WWII era, to increase the United States' economic importance, and to support trade between nations.