Answer:
Skilled labour.
Step-by-step explanation:
A skilled worker is one that posses training, special skill, knowledge and ability in a particular field. The skill learner could have been from school with the evidence of a bachelor's, masters, or doctorate degree. It could also be learner on the job.
Skilled labour usually require prolonged training, workers are specialised and highly trained to work on complex tasks.
Examples of skilled workers are policemen, engineers, doctors, pharmacists, soldiers, and accountants.