Answer:
c) is a knowledge worker
Explanation:
A knowledge worker is an individual who is skillful, experienced, educated and whose duty is to apply his or her thinking creativity on the job. According to Peter Drucker, a knowledge worker is someone who is innovative and creative in terms of developing new products and services and one who always find a better way of doing things.
The job of a knowledge work is very complex hence involves expertise on the subject field. A knowledge worker most often develop new ideas and strategies to meeting needs of people rather than focusing on manual and repetitive work. Example of knowledge workers includes but not limited to engineers, scientists, physicians, lawyers etc.