Question

While many Russian soldiers were on the front during World War I, most of those who remained behind responded to the February Revolution by

leaving the cities to fight on the front.
firing into crowds of peaceful protestors.
joining the riots instead of stopping them.
breaking up the riots and restoring order.

Answer 1

joining the riots instead of stopping them.

Many garrison troops in Petrograd refused orders to fire on demonstrators, mutinied, and fraternized with protesters, effectively siding with the revolution.