At the start of the 21st century in britain, germany, and russia, the basic economic questions of what, how, and for whom to produce were answered by the producers and consumers.

Producers and consumers you already marked the correct answer, difrence is that afterwards russia started huge scale state interventionism germany later reduced welfare state and since 2010 david cameron started to deregulate the govermnetal social program introduced during blair because it led to huge spending and public debt