Comprehensive and Detailed Explanation From Exact Extract:
From theCTFL-AT Syllabus v4.0, Section 2.2Release and Iteration Planning, testers actively contribute during release planning:
"During release planning, testers collaborate with the team to understand the scope of the release and help identify any high-level test considerations. They also participate in quality risk analysis and help in estimating test effort."
Furthermore, it is noted:
"Testers are involved in defining and refining user stories and acceptance criteria, and contribute to quality risk assessments."
Therefore,Option Cis accurate as it reflects the tester's involvement inprioritizing user storiesand conductingquality risk analysisduring release planning.
Option Ais incorrect because defining and redefining the product backlog is primarily the role of theProduct Owner, and the test approach isiteration-specific, not fixed for the full release.
Option Bis inaccurate — breaking down stories into tasks is generally part ofiteration (Sprint) planning, not release planning.
Option Dis incorrect —release plans can changein Agile to accommodate changing business needs.
[References:, CTFL-AT Syllabus v4.0, Section 2.2, Learning Objective (K2) – Understand the role of the tester in release and iteration planning, ===========, ]