Calling cavalry and police shows which policy of the Tsarist government?

Correct answer: Policy of stopping the movement through repression

The governing historical concept is state repression during the February Revolution in Petrograd. When demonstrations grew, the Tsarist government called the police and cavalry to disperse crowds and restore order by force. This action shows that the authorities treated popular demands as a threat rather than responding through negotiation or reform. Therefore option B is correct: it describes an attempt to suppress the movement through coercion. Option A is the opposite of the action taken. Options C and D concern social or economic policies and do not explain the deployment of armed forces against demonstrators. The evidence is therefore a direct example of authoritarian repression.