Answer: Problem detection
Explanation: Problem detection is used in R&D, it is a techniques that asks consumers who are familiar with the product or service to ponder upon an exhaustive list of things that bothers them while using the product.
This is done to find the ideas to make creative strategies and improvements in product/service.
Problem Detection approach identifies and prioritizes the most pressing consumer concerns so that the brand they are associated with can address unmet needs that exist in the marketplace.