Answer:
B. Is a knowledge worker
Explanation:
Knowledge workers are employees whose main capital is knowledge. They are said to think for a living rather than you see in manual labour. To put in simple words, they are employees whose jobs requires them to think for a living. They usually posses a specialized knowledge, usually in their field of study. They help in developing new strategies and helps come up with new ideas for products and services. In this case, Oliver uses his knowledge to produce eco friendly outfit through cost efficient manufacturing process. He also interacts with customers to get feedbacks about their needs and improvements on the products.