Which of the following would be considered a member of the U. S. labor force?
Select one:
A. A coal miner without a job who has not looked for work during the past four months.
B. A 10-year-old girl who is a movie star.
C. A teacher who hasn't worked during the past two years but continues to look for work.
D. A private in the army who works in the U. S. at an officers' club

Brian has just finished college. he wants to set up a small business to make and sell fireworks. he registers his company and acquires a license from the government. he finds that most of his competitors are selling fireworks at an extremely low price. he would like to make more money, so he decides to innovate and develop better fireworks. he sells his fireworks at a higher price, and they are a huge hit with the customers. after a few years, he earns enough profit to set up a bigger fireworks factory that complies with the government’s health and safety regulations. he even starts exporting fireworks overseas. which type of economy does this scenario describe?