in which of the following cases is crowdsourcing used for new product development? in which of the following cases is crowdsourcing used for new product development? franny denim company hires an ad agency to promote its new line of hair accessories. clara leather company creates an online form where customers can submit new ideas for leather belt designs. none of these are an example of crowdsourcing. eva sleepwear creates a prototype of a new slipper design. decca athletic apparel develops a business plan for a new product idea.