In their research, Fiber One product managers consistently heard that the awful taste of fiber was a real barrier for many consumers, even though they realized they needed more fiber in their diets. So, during the __________ phase of the new product development process, the team at Fiber One tested different product formulations for its new Fiber One bars to ensure the product achieved the optimum taste-fiber trade-off.
commercialization
B.
business analysis
C.
product development
D.
idea screening
E.
concept testing