Explanation
Effectiveness is a performance measure that evaluates how well the work products meet the intended goals and objectives. It can be assessed by comparing the actual outcomes with the expected outcomes, and by measuring the degree of stakeholder satisfaction and value realization. Effectiveness can help the BA to determine the quality and impact of the business analysis work, and to identify any gaps or areas for improvement123. References:
1: BABOK Guide v3, Chapter 2: Business Analysis Planning and Monitoring, Section 2.5: Plan Business Analysis Performance Improvements
2: BABOK Guide v3, Chapter 10: Techniques, Section 10.35: Root Cause Analysis, Section 10.36:
Scope Modeling
3: Performance Measurement - What Is It, Example, Methods,
Types(https://www.wallstreetmojo.com/performance-measurement/)

Explanation
Risk management is the process of identifying, analyzing, responding, and monitoring the risks that may affect the project or the organization. Risk management helps to minimize the negative impacts and maximize the positive opportunities of the uncertainties and assumptions. Risk management involves setting the risk tolerance, which is the level of risk exposure that the organization is willing to accept. Risk management also involves identifying the potential risks, which are the factors that may jeopardize the project or the organization's objectives. Risk management also involves prioritizing the tolerance for risk, which is the order of importance of the risks based on their probability and impact. Risk management is an iterative and continuous process that should be performed throughout the project life cycle and at different levels of the organization. References: [IIBA BABOK Guide v3], section 11.1, page 384; CBAP / CCBA Certified Business Analysis Study Guide, chapter 5, page 227; CBAP Sample Questions, question 232.