d) Living standards of people within developing economies vary greatly — to a much greater degree than in high-income economies.
a) Such gaps largely reflect differences in productivity — the central driver of living standards across the world.
c) These differences increasingly have spurred governments to adopt well-intentioned policies to improve the livelihoods of those in “places left behind.”
b) Yet the results often fall short of expectations, leaving billions of people farther behind while eroding public confidence in government initiatives.
