Before selecting a design solution, a company wants to ensure that stakeholder, solution, and transition...

 The process that the BA is completing before selecting a design solution is requirements verification. Requirements verification is the process of ensuring that requirements and designs are complete, correct, consistent, clear, feasible, unambiguous, testable, and conform to standards2. It involves checking whether stakeholder, solution, and transition requirements align to the business requirements and whether the design satisfies the requirements. Requirements verification can help to identify and resolve errors, gaps, or inconsistencies in the requirements and designs before they are implemented. References: 2: BABOK Guide v3, Section 4.6