Answer:
b. infrastructure
b. Countries with relatively large public sector shares in the economy have the highest growth rates in GDP per capita.
Step-by-step explanation:
The capital stock refers to physical, tangible capital assets, and utilities refer to services like power, water, communications, etc.
The public sector refers to the resources under the government's control as opposed to private citizens.
All of these are part of the more general infrastructure, which also includes other things that determine how well an economy functions.
Property rights, enforceable contracts, and stable prices all contribute to economic growth. The conventional wisdom now is that more economic freedom, as opposed to public sector programs, leads to higher growth rates.