Explanation
The decision-making process in the business analysis plan defines how decisions will be made regarding the requirements and the business analysis approach. It specifies the roles and responsibilities of the decision makers, the criteria and methods for making decisions, and the process for resolving conflicts and disagreements. Having a clear decision-making process can help the business analyst facilitate the requirements workshop and reach an agreement among the stakeholders with different points of view and priorities. References: = PMI Professional in Business Analysis (PMI-PBA)
Examination Content Outline,
page 13.

Explanation
The business analyst could use the expected vs. actual results technique to iteratively validate the solution.
This technique involves comparing the expected results or outcomes of the solution with the actual results or outcomes that are observed or measured after the solution is implemented. This technique helps to verify that the solution meets the requirements and the acceptance criteria, and to identify any gaps, issues, or defects that need to be resolved or corrected. References: PMI Professional in Business Analysis (PMI-PBA) Examination Content Outline1, page 25; Business Analysis for Practitioners: A Practice Guide2, page 141.

Explanation
Observation is a technique that involves watching how people perform their tasks and activities in their natural work environment. Observation can be used to gain an objective, first-hand insight into tasks and activities that are difficult to describe, as it allows the business analyst to see the actual behavior, interactions, processes, and problems of the users or customers. Observation can also help to identify the implicit, hidden, or unspoken needs and expectations of the users or customers, as well as to validate the information obtained from other elicitation techniques. Observation can be done in two ways: passive or active. Passive observation means that the business analyst does not interfere or participate in the tasks and activities, but only records and analyzes what is observed. Active observation means that the business analyst interacts with the users or customers, asks questions, and provides feedback during the observation. References: PMI Professional in Business Analysis (PMI-PBA)
Examination Content Outline1, page 17; Business Analysis for Practitioners:
A Practice Guide2, page 89.

Explanation
According to the PMI Guide to Business Analysis, a requirements traceability matrix is a tool that helps to ensure that the requirements are aligned with the business needs and objectives, and that they are verified and validated throughout the project life cycle. A requirements traceability matrix can also help to identify gaps, redundancies, and inconsistencies in the requirements. If the requirements matrix did not adequately track back to client requirements, it could result in a product that does not meet the client's expectations or specifications, even if it passes the test plan. Therefore, it is important to establish and maintain a clear and accurate traceability of requirements from their source to their implementation and verification. References:
PMI Guide to Business Analysis, page 179-180.

Explanation
Internal rate of return (IRR) is a technique that calculates the annualized rate of return of an investment or a project. IRR can help the business analyst to determine the estimated growth rate of potential solution options by comparing the present value of the expected cash inflows and outflows of each option. IRR can also help to select the option that has the highest rate of return and exceeds the minimum required rate of return or the cost of capital. References: = PMI Professional in Business Analysis (PMI-PBA)
Examination Content Outline
(2019), page 11; Business Analysis for Practitioners: A Practice Guide (2015), page 66.