You are the business analyst for your organization and are currently with several key stakeholders...

 A regulator is not a stakeholder that is considered when completing the business analysis planning and monitoring task to determine a business analysis approach. A regulator is an external entity that imposes rules, standards, or guidelines that the organization and the solution must comply with. A regulator is not directly involved in the business analysis process, but rather in the governance and validation of the solution. Therefore, a regulator does not influence the choice of the business analysis approach, which is based on the characteristics and needs of the project and the organization.

The other options are stakeholders that are considered when completing the business analysis planning and monitoring task to determine a business analysis approach. A tester is a stakeholder who verifies and validates the quality and functionality of the solution. A project manager is a stakeholder who oversees and coordinates the project activities, resources, and deliverables. A functional manager is a stakeholder who manages a specific business function or department, such as finance, marketing, or human resources. These stakeholders have different roles, responsibilities, expectations, and interests in the business analysis process, and they may affect or be affected by the choice of the business analysis approach. References:

BABOK® Guide, p. 29, 32, 66

CBAP / CCBA Certified Business Analysis Study Guide, p. 45, 48, 133

Certified Business Analysis Professional™ (CBAP®) | Coursera, Course 1, Week 2, Video: “Business Analysis Planning and Monitoring”