Answer:
C) Skilled labor
Step-by-step explanation:
Unskilled labor is basically someone with very little education that performs simple tasks, e.g. maids, fast food restaurant workers.
Semiskilled labor requires some type of basic training and experience, but not as much as skilled labor, e.g. truck drivers, salespeople, bartenders.
Professional labor refers to someone that provides a service from a specific professional activity, e.g. accountant, lawyer, doctor.
A few examples of skilled labor are police officers, nurses, electricians.