Answer:
D. increases, and the labor-force participation rate is unaffected.
Step-by-step explanation:
When the students pass out from a university or high school and are looking for a job but unable to get a suitable one will definitely increase the unemployment rate but since Sirius has not yet started working so labor-force participation rate will be unaffected by his unemployment. There will be no effect on the labor-force participation rate but unemployment rate will increase.