Johnson chose not to run for re-election in 1968, largely because of the deadly war in Vietnam and the civil war that divided the Democratic Party. Thus, Option A is the correct statement.
Lyndon Baines Johnson, commonly known by his first name LBJ, was an American politician who served as the 36th president of the United States from 1963 to 1969.
Thus, Johnson chose not to run for re-election in 1968, because the Vietnam War hurt his image. Thus, Option A is the correct statement.
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