Answer:
job specialization
Explanation:
Wilber started a tech business in his garage and employed few people under him. Initially, all the employees did any task that arises irrespective of their skills and specialization.
But now the organisation has grown bigger and now they have move their business from their garage to a building. Wilber employed 50 employees now and he is assigning each employee what they have to do.
He is assigning them their work. He has organised his company in a proper manner and assigned each employee based on their skills and job specialization.
Thus Wilber is engaged in creating job specialization.