Answer:
The correct answer is letter "A": Erik.
Explanation:
Unemployment occurs when a person actively looking for work can not find a job. The most frequently cited indicator of unemployment is the unemployment rate, which is the number of unemployed people divided by the number of employees in the labor force.
Thus, Erik can be considered unemployed since he is volunteering at school, meaning he is not earning any compensation for that, and he is actively looking for a job even if he has not been able to find one yet.