Product Testing Introduction

(D) Conduct a demonstration at the customer’s facility.

Reviews and predictions are common approaches to evaluate a design during the development process. They do not include the end customer’s use environment or fully reflect the (often unknown) customer expectations. The key phrase here is “most accurate”, which means the various methods are all potential methods to verify the meeting of a requirement. In this case, the verification that includes the fewest assumptions or limitations on understanding/applying the customers requirements is the best or most accurate.