Comprehensive and Detailed In-Depth Explanation:During iteration planning, testers provide input on risk analysis, testability, and the feasibility of test automation.Participating in risk analysis (B)helps identify areas needing more extensive testing.
* (A) is incorrectbecause the test strategy is usually set at a higher level (project or release level).
* (C) is incorrectas release planning is broader than iteration planning.
* (D) is incorrectsince writing user stories is mainly the responsibility of theproduct owner, though testers contribute to defining acceptance criteria.
Risk-based test prioritizationensures testing efforts are aligned with business needs and software risks.