Martin was trying to sell pumps for circulating water in decorative goldfish ponds when he realized that the reason he was not able to sell many pumps was the weight of the model he was trying to sell. he approached his firm's engineering team with the idea to replace every possible metal part of the pump with a hard plastic substitute. after making the change in design, the pumps became lightweight and were better able to meet customers' requirements. as the martin identified an opportunity, saw the project from its conception to the development of a lighter model pump.

a. change agent
b. gatekeeper
c. driver
d. spotter
e. champion