Which of the following individuals would economists consider unemployed?
a. Sam looked for work for several weeks but has now given up his search and is going back to college.
b. A 14-year-old wants to mow lawns for extra cash but is unable to find neighbors willing to hire her.
c. A factory worker is temporarily laid off but expects to be called back to work soon.
d. A receptionist, who works only 20 hours per week, would like to work 40 hours per week.
e. A high school graduate is spending the summer backpacking across the country rather than seeking work.