Which problem was increased by heavy snow and cold in February 1917?

Correct answer: Difficulty of life and food

Heavy snow and severe cold worsened the existing crisis in Petrograd during February 1917. Transport became difficult, supplies could not move easily, and shortages of fuel and food became more serious. Ordinary people therefore faced longer queues, hunger, cold homes and greater insecurity. These conditions increased public anger and helped turn economic hardship into mass demonstrations. Option A is correct because it combines the immediate difficulties of daily life and food supply. Option B is irrelevant to the revolutionary crisis, while option C does not describe the experience of the city’s population. Option D is also incorrect: harsh weather did not increase the Duma’s political power; the central issue was worsening hardship among the people.