The correct answer is B - Invite the team to evaluate the suggestion and measure the effectiveness of the implementation.
In Agile, continuous improvement is a shared responsibility, and retrospectives are meant to be collaborative sessions where all team members-regardless of experience-can contribute. Ideas that could enhance performance should be discussed by the team as a whole and, when deemed valuable, tested and evaluated in upcoming sprints.
From the PMI Agile Practice Guide:
"The team owns the process and should inspect and adapt at regular intervals. During retrospectives, the team identifies potential improvements and experiments with them in subsequent iterations." (PMI Agile Practice Guide, Section 5.5 - Continuous Improvement) Mike Griffiths states:
"Retrospectives empower teams to improve. All suggestions, regardless of origin, should be treated with respect. Teams test ideas and inspect outcomes to improve incrementally." (Mike Griffiths, PMI-ACP Exam Prep Book, Chapter 7 - Continuous Improvement) Why other options fall short:
* A delays action and discourages innovation.
* C makes the product owner responsible for a team process decision, which is outside their role.
* D promotes hierarchy, which undermines team collaboration and Agile values.