The first activity that the BA should perform to understand the effect of the proposed change is to determine whether the additional requirement is traceable to a need. This will help to assess the value and relevance of the requirement, and whether it aligns with the project scope and objectives. Determining stakeholder availability, consulting with the technical team, and checking with the project manager are possible subsequent activities, but not the first one. References: BABOK Guide v3, page 160; CCBA Mock Test, question 12