Gloria, a graduate in fashion designing, wants to open her own tailoring shop. She estimated the preliminary figures for demand, cost, sales, and profitability for the first financial year of running her shop. After much deliberation, she decided to borrow money from her friends and family who have offered to invest in her business. Gloria is currently at the _____ of the new-product development process.

a. business analysis stage b. test marketing stage c. idea generation stage d. commercialization stage