Product innovation refers to efforts to create designs and applications of technology to develop new products, while innovation refers to efforts to improve the efficiency of organizational systems such as manufacturing and operations.

a. radical
b. breakthrough
c. process
d. service

C. process

Explanation:

A process innovation improve the efficiency of organization system such as manufacturing and operations. A radical innovation is a total replacement of an existing system , a breakthrough is a new discovery to manufacturing process , while a service innovation is related to the services industry and not manufacturing.

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