Great Britain could no longer fulfill its role as a world superpower after World War II because:
C. Great Britain was in shambles after the war.
The devastation caused by World War II, along with the significant economic and infrastructural damage to the United Kingdom, weakened its position as a global superpower. The war had taken a toll on its resources and power, leading to the decline of the British Empire and the rise of the United States and the Soviet Union as the dominant superpowers of the post-war era.