The project manager should approach this situation by requesting that the customer reviews and clarifies feature definitions for the current sprint. This is because the customer is the primary source of the requirements and the best person to provide the technical details that the project team needs. By reviewing and clarifying the feature definitions, the customer can ensure that the project team understands the requirements correctly and can deliver the expected value in the current iteration. This will also help to avoid rework, scope creep, and customer dissatisfaction in the future.
The other options are not the best ways to approach this situation. Sending a burndown chart of the current sprint to the customer and seeking clarifications may not be effective, as the burndown chart only shows the progress of the work done, not the quality or accuracy of the work. The customer may not be able to provide the technical details based on the burndown chart alone. Educating the customer and having them participate in daily standup meetings may not be feasible, as the customer may not have the time, interest, or expertise to attend the daily meetings and learn about the project details. This may also create unnecessary dependencies and interruptions for the project team. Scheduling weekly meetings and product reviews with the customer to clarify requirements may be too late, as the project team needs the technical details in the current iteration, not in the next week. This may also delay the feedback and validation process and increase the risk of delivering the wrong product.
:
What is Sprint Planning? | Scrum.org
A 6-step guide to requirements gathering for project success - Asana
Chapter 3: Identifying Customers' Requirements | GlobalSpec
9 Questions To Clarify Your Business Goals & Customer Needs