D. A few elite groups became the party's rulers
best describes the communist party in the soviet union
Explanation:
Communist Party of the Russia (CPSU), conjointly known as (1925–52) All-Union Communist Party (Bolsheviks), Russian Kommunisticheskaya Partiya Sovetskogo Soyuza, or Vsesoyuznaya Kommunisticheskaya Partiya (Bolshevikov), the key party of Russia and therefore the Russia from the Russian Revolution of Gregorian calendar month 1917.
