Final answer:
Open-ended questions help find new niches and perfect a product before it is introduced.
Step-by-step explanation:
An advantage of using open-ended questions is that they help find new niches and perfect a product before it is introduced. Open-ended questions allow respondents to provide detailed and subjective answers, which can provide valuable insights into their preferences, needs, and ideas. By allowing participants to express their thoughts and opinions freely, open-ended questions can uncover new opportunities and help improve products or services.