The approach described in the system test plan is inconsistent with both declared strategies. A risk-based strategy requires risk analysis to be performed before test execution to guide test design and prioritization. Performing analysis in parallel with execution negates this core principle. Similarly, a regression-averse strategy relies on having a defined set of regression tests ready to be executed to check for unintended side effects of changes. Designing these tests in parallel with execution indicates a reactive, rather than a preventative (averse), approach. The V-model itself implies that test design is completed during the corresponding development phase, well before test execution begins.

A. The approach is inconsistent because performing planning, analysis, and design concurrently with execution fundamentally contradicts the proactive nature of both strategies.

B. The approach is inconsistent with risk-based testing because risk analysis must precede execution to effectively prioritize and guide the testing effort.

C. The approach is inconsistent with a regression-averse strategy because a stable suite of regression tests cannot be systematically executed if it is still being designed.

1. ISTQB Advanced Level Syllabus, Test Manager (Version 2012), International Software Testing Qualifications Board.

Section 3.2, "Risk-Based Testing," outlines the process where risk identification and analysis are used to "guide test planning, specification, preparation and execution." This confirms that analysis is an input to, not a parallel activity with, execution.

Section 2.2.1, "Test Activities and Tasks," describes the V-model, where system test planning and design occur in parallel with the requirements engineering phase, long before the system test execution phase. The plan's approach of running these activities in parallel with execution is a clear deviation.

2. Ammann, P., & Offutt, J. (2017). Introduction to Software Testing (2nd ed.). Cambridge University Press.

Chapter 1, Section 1.4, "The V-model of Testing," (pp. 14-15) illustrates that test design and planning activities for a given level are completed before the execution for that level starts. For system testing, design is based on the system requirements specification.

Chapter 2, Section 2.2, "Test Plan," (pp. 26-28) describes test planning as a preceding activity that defines the scope, approach, and resources. The scenario's parallel execution of planning undermines this structured process, which is essential for both risk-based and regression-averse strategies.