Why was the attitude of soldiers important in the February Revolution?

Correct answer: Because change in their support weakened the Tsar's power

During the February Revolution of 1917, the attitude of soldiers was crucial because the Tsar's government depended heavily on the army to maintain order. At first, troops were used against protesting workers, but many soldiers later refused to continue firing and joined the people. This change removed an important support of the monarchy and weakened the Tsar's authority. Therefore, option A is correct.

A revolution can become successful when the state loses control over its armed forces. The soldiers' mutiny and cooperation with the protesters made it difficult for the government to suppress the demonstrations. The other options are plainly unrelated: soldiers were not merely traders, their actions did not strengthen the Tsar, and they were not outside politics. Their decision to withdraw obedience was a turning point that contributed directly to the abdication of Nicholas II and the end of Tsarist rule.