Answer:
b. Structural Unemployment
Step-by-step explanation:
Structural unemployment exists due to a mismatch between jobseeker's skills and the currently available jobs in the market. This implies that the market has available job opportunities, but the current labor force may require retraining to take up the jobs effectively.
Advancements in technology may cause structural unemployment. In recent years, robots have been replacing unskilled workers. It means these workers must acquire skills through training to have a chance of getting hired elsewhere.