Which of these groups is known to operate within the Russian organized crime framework?

The Solntsevskaya group is indeed known to operate within the Russian organized crime framework, making it the correct answer. Originating in Moscow, the Solntsevskaya organization is one of the largest and most powerful crime groups in Russia. It is involved in a wide range of criminal activities, including drug trafficking, extortion, and money laundering. The group has established a strong influence both in Russia and abroad, showcasing the international reach of Russian organized crime.

In contrast, La Cosa Nostra is an Italian-American organized crime group primarily associated with Sicily and the United States. The Yakuza represents Japanese organized crime and operates mainly in Japan and other parts of East Asia. The Hells Angels are primarily known as a motorcycle club that operates in various countries but is not specifically tied to the Russian organized crime context. Therefore, the Solntsevskaya group is distinguished by its connection to the Russian organized crime landscape, making it the correct choice.