Answer:
B. How can available resources be used efficiently?
Explanation:
In order to maximize the efficiency of the limited productive resources a society needs and wants, we must ask three main questions (what to produce, how to produce and for who to produce). All economic systems (free-market, mixed, command, and traditional) seek to solve these three questions.
To determine how a society will produce goods and services we must ask how can available resources be used efficiently, which resources are adequate to produce certain good, and how it will be produced, whether it is by machines or people to maximize the capacity of production.
