In which stage of the new-product development process do most ideas for new products and services end up getting rejected for one reason or another

Answer: Idea screening

Explanation:

Idea screening stage is the part of product development model that describes about exploring ideas about new product and then it is examined, tested, experimented and contrasted so that successful product can be created in business. Building of product ideas tend to make product development easier and successful.

Many ideas are eliminated and rejected in this process because the most prominent idea requires high accuracy, purposefulness, benefits for the business to produce successful product.