As the bolsheviks took control of the soviet economy, they

determined which jobs workers would hold and where workers would live.
took land from peasants and gave it to members of the upper class.
shipped grain and other food products from the cities to peasants.
allowed businesses to decide prices and let workers set wages.

Option A, determined which jobs workers would hold and where workers would live.

Explanation:

The options that don't make sense:  Options B, C, D

The option that makes sense:  Option A

 Option A, determined which jobs workers would hold and where workers would live.

confederacy: supported slavery, believed states should be able to nullify federal laws, supported low tariffs

union: everything else