The stakeholders that were missed in the requirements are the end users. End users are the people who will use the solution or be affected by its outcomes. They are a key source of requirements, as they can provide valuable insights into the needs, expectations, preferences, and pain points of the solution. The BA should elicit requirements from the end users, as well as validate and verify them with their feedback. The BA should also ensure that the end users are involved throughout the project lifecycle, from planning to testing to implementation. The other options are not the stakeholders that were missed, as they are either not directly related to the solution or not the primary source of requirements. References:

CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, Chapter 2: Business Analysis Key Concepts, Section 2.3: Stakeholders, p. 59-60

A Guide to the Business Analysis Body of Knowledge® (BABOK® Guide), Version 3, Chapter 2: Business Analysis Key Concepts, Section 2.3: Stakeholders, p. 28-29

A Guide to the Business Analysis Body of Knowledge® (BABOK® Guide), Version 3, Chapter 4: Elicitation and Collaboration, Section 4.1: Prepare for Elicitation, p. 97-98