What problem emerged later because two centres of power formed after the February Revolution?

Correct answer: Political instability

After the February Revolution, the Tsarist government was removed, but power did not immediately become concentrated in one authority. The Provisional Government claimed formal political power, while the Petrograd Soviet and other soviets represented workers and soldiers and exercised strong influence. This situation is often described as dual power. Since two authorities had different interests and competing claims, decisions became difficult and the political situation remained uncertain.

Option A is correct because the existence of two important centres created political instability. It did not restore a stable monarchy, so B is opposite to the historical development. The division of authority also did not end the war immediately, making C incorrect. There was no acceptance of foreign rule as the central result, so D does not follow. The key link is dual power leading to conflict, uncertainty, and instability.