According to the CCBA® Handbook, traceability is "the ability to track the relationships between requirements and other related items, such as stakeholders, solution components, test cases, defects, and changes" (p. 22). Traceability can help the business analyst assess the total impact of a requirement change, as it shows how the requirement is linked to other items in the development cycle, and how the change may affect them. Traceability can also help the business analyst identify the items that need to be updated, reviewed, or tested as a result of the requirement change. The other options are not correct because:
A: Implementation SME is not a tool, but a stakeholder who has specialized knowledge of the technologies, tools, or techniques that will be used to implement the solution (p. 15). Implementation SMEs can provide input and guidance on the feasibility and suitability of the requirement change, but they cannot help the business analyst assess the total impact of the change on other items.
C: Coverage matrix is not a tool, but a technique that is used to measure the extent to which the requirements cover the business need and the solution covers the requirements (p. 23). Coverage matrix can help the business analyst ensure the completeness and alignment of the requirements and the solution, but it cannot help the business analyst assess the total impact of a requirement change on other items.
D: Integrated change control is not a tool, but a process that is used to review, approve, and implement changes to the project scope, schedule, cost, or quality (p. 13). Integrated change control can help the business analyst manage the changes and ensure they are aligned with the project objectives, but it cannot help the business analyst assess the total impact of a requirement change on other items.
References:
CCBA® Handbook, p. 13, 15, 22-23
Analyzing the Impact of Requirement Changes, section "Before you make changes to a requirement, you may want to know how the changes impact related items."