The business analyst should check the traceability matrix to identify affected use cases. A traceability matrix can help the business analyst to find out which use cases are related to the new set of regulations, and how they will impact the scope, schedule, cost, quality, and risk of the project.The business analyst should also communicate the changes to the relevant stakeholders, and update the requirements documentation and the business analysis plan accordingly.Reference: PMI Professional in Business Analysis (PMI-PBA) Examination Content Outline1, page 20; Business Analysis for Practitioners: A Practice Guide2, page 100.

According to the PMI Professional in Business Analysis objectives and content, a prototype is a tool that can be used to demonstrate the features and functionality of a product or solution in an iterative manner. A prototype can help to elicit, validate, and verify requirements, as well as to obtain feedback and approval from stakeholders. A prototype can also help to reduce risks, errors, and rework, and to increase customer satisfaction and quality. A proof-of-concept model is a type of prototype that is used to test the feasibility and viability of a product or solution. A proof-of-concept model can help to show the benefits and value of the product or solution, and to identify any technical or business challenges or constraints.Reference:

PMI Professional in Business Analysis objectives and content:PMI-PBA Certification

PMI Professional in Business Analysis reference list:PBA Reference List

PMI Professional in Business Analysis study guide:Study.com

Business rules are statements that define or constrain some aspect of the business, such as policies, standards, procedures, regulations, or constraints. Business rules can be uncovered by asking about the reasons for choosing a particular course of action when modeling processes or analyzing tasks. By asking why a certain decision is made, what criteria are used, what conditions are applied, or what consequences are expected, the business analyst can elicit the business rules that govern the behavior or outcome of the process or task.Asking about tasks that overlap with each other, work that may be performed out of sequence, or task transitions that hinder organizational performance may help to identify issues or opportunities for improvement in the process or task, but they may not reveal the business rules that underlie them.Reference: PMI Professional in Business Analysis (PMI-PBA) Examination Content Outline1, page 15; Business Analysis for Practitioners: A Practice Guide2, page 95.

A change control process is a process that could help manage the situation of scope creep. Scope creep refers to the problem experienced on many projects when the size or complexity of the original product description grows. Scope creep can have negative impacts on the project schedule, budget, quality, and stakeholder satisfaction. A change control process is a process that defines how changes to the project scope, requirements, deliverables, or other configuration items are requested, evaluated, approved, implemented, and monitored.A change control process can help the business analyst and the project team to manage the expectations of the stakeholders, to assess the impact and feasibility of the changes, to prioritize and implement the changes, and to communicate the changes to the relevant parties.References: PMI Professional in Business Analysis (PMI-PBA) Examination Content Outline1, page 23; Business Analysis for Practitioners: A Practice Guide2, page 131.

Quality assurance is a function that involves applying quality standards and processes to ensure that the project or program meets the quality requirements and delivers the expected value to the stakeholders. Quality assurance also involves auditing the quality requirements and the results of quality control measurements to ensure that appropriate quality standards and operational definitions are being used. Quality assurance helps to prevent defects and errors, improve customer satisfaction, and enhance the credibility and reputation of the organization.Reference: PMI Guide to Business Analysis, Chapter 10, Section 10.3.1; PMI Professional in Business Analysis (PMI-PBA) Examination Content Outline, Domain V: Evaluation, Task 3.