(An unexpected issue has come up, blocking the progress of your initiative.

The correct answer is B. In BABOK, stakeholder engagement planning includes identifying the appropriate stakeholders for a given situation and determining how and when to communicate with them. When an unexpected issue blocks progress, the business analyst should first understand the issue sufficiently and determine which stakeholders are relevant before initiating communication or meetings. This avoids unnecessary confusion and ensures the right people are involved in resolving the problem. (iiba.org)

Option A is incorrect because sending a summary to all stakeholders may be premature and may include people who are not directly impacted or needed. BABOK emphasizes identifying stakeholder characteristics, responsibilities, and collaboration needs rather than communicating indiscriminately. (iiba.org)

Option C is incorrect because delaying action until a complete solution is found can worsen the blockage. Business analysis supports timely collaboration and issue escalation when necessary; waiting too long can increase project risk and reduce responsiveness. (iiba.org)

Option D is also incorrect because immediately scheduling a meeting with all stakeholders is not always appropriate. The analyst should first determine the nature of the issue and who needs to be involved. BABOK encourages purposeful stakeholder engagement, not automatic involvement of everyone. (iiba.org)