Which country is communist today and is struggling with food and energy shortages, totalitarian rule, and famine?

The answer is - North Korea.

North Korea, or officially the Democratic People's Republic of Korea, is a communist country in the modern world, and unlike most of the communist countries it managed to survive even though the country is struggling from pretty much every aspect. Despite all the problems, it must be noted that the country is stable internally and the peace is kept, so that's the biggest factor that has contributed to the survival of the country.

C. the delegated powers