When Honest Tea developed its Yerba Mate line, the company considered the new product development process. When "TEO" Seth Goldman and other Honest Tea executives evaluated how the product would fare in the market, executives considered the market’s size and the growth rate potential for the product. These tasks happened during the ____ stage of the new product development process.
a. Test marketing
b. Commercialization
c. Business analysis
d. Concept testing
