A product owner has an idea for a new product but is struggling to define...

 According to the PMBOK Guide, when using an agile approach, the project manager needs to deliver value early and often by creating and testing increments of the product, service, or result that are potentially releasable1. A minimum viable product (MVP) is a version of the product that has enough features to satisfy the initial needs of the customers and stakeholders, and to provide feedback for future development2. By developing an MVP for assessment from a select customer group, the project manager can address the issue of the product owner’s uncertainty about the business value of each feature, as well as validate the product vision, test the assumptions, and reduce the risks2. The other options are not appropriate, as they do not reflect the agile mindset and principles. Assessing the product roadmap, commissioning a business analyst, or completing a WBS are all possible actions that could be taken in a predictive or waterfall approach, where the product features are defined and fixed upfront. However, in an agile approach, the product features are emergent and adaptive, and the project manager should collaborate with the customer and the team to deliver the best possible product3. References:

1: PMBOK Guide, 6th edition, page 18

2: PMBOK Guide, 6th edition, page 158

3: PMBOK Guide, 6th edition, page 156