What economic thinking of the new government became clear through nationalisation of banks?

Correct answer: Keeping key financial institutions under state control

Direct answer: Option B, keeping key financial institutions under state control. Nationalisation means transferring ownership or control from private owners to the government. Reasoning: banks collect savings, provide credit, move money, and influence investment; if the new government nationalised them, it was choosing to direct these important financial functions through the state; this shows a preference for state control over major economic institutions, consistent with socialist economic thinking. B is correct. A is wrong because complete freedom for private banks would represent the opposite policy. C is wrong because nationalisation did not mean handing the financial system to the Church. D is wrong because the Bolshevik government had replaced the Tsarist order and did not return banks to the Tsar family. Nationalisation does not mean that every individual bank customer loses all rights; it describes ownership or controlling authority. Memory cue: nationalise = bring a major institution under national/state control.