Answer:
The correct answer is option a.
Explanation:
The bureau of labor statistics calculates the data regarding the unemployment rate in the US economy. It calculates the unemployment rate as the ratio of total unemployed to the total labor force.
Those people who are having a job or business and are working for profit or those who are currently unemployed and looking for jobs are included in the labor force. Students, retirees, and discouraged workers are not included in the labor force.
Here, Christopher is neither working for profit nor looking for work so he will not be considered unemployed or in labor force.