Whom did the government call to stop the demonstrations?

Correct answer: Cavalry and police

The direct answer is D: cavalry and police. During the February Revolution in Petrograd, the government tried to control and suppress demonstrations by calling in forces such as the police and cavalry. The reasoning is: demonstrations spread; the government viewed them as a threat; it called armed state forces to restore order; therefore cavalry and police are the relevant answer. Option A, peasant council, is wrong because it was not the government’s coercive force for stopping street demonstrations. Option B, foreign teachers, is unrelated to military or police control. Option C, traders’ union, represents commercial interests and was not the force called to suppress the crowds. Option D is correct because cavalry and police were instruments of state repression. A useful history cue is to distinguish the protesters’ actions from the government’s response: protesters demonstrated and struck; the state used police and cavalry.