Explain whether each of these individuals will be counted as a part of the labor force.

a. Jane is working full-time toward a Ph.D. in philosophy but volunteers at nursing homes during her spare weekends.

b. Kristen left her full-time job as a journalist to spend more time with her kids and now makes some income working part-time for a children’s magazine.

c. In the past four weeks, Harry did not respond to a call from a firm seeking to interview him for a job opening.

But he recently applied for another job that he feels will better suit his qualifications.