Answer:
d. not widely used because it is known or controlled only by the company that discovered it.
Step-by-step explanation:
Technology can be defined as a branch of knowledge which typically involves the process of applying, creating and managing practical or scientific knowledge to solve problems and improve human life. Technologies are applied to many fields in the world such as medicine, information technology, cybersecurity, engineering, environmental etc.
Proprietary technology is peculiar to a particular company.
Proprietary technology is technology that is not widely used because it is known or controlled only by the company that discovered it.