Concept:Assessment is a tool to track and improve student learning, not to compare or label.Explanation:The main purpose of assessment is to understand what a student has learned and how they learned it. It helps teachers give useful feedback and adjust their teaching. Options A, B, and C focus on limitations, comparisons, or labels — which are not the goal. The correct focus is to describe the learner's progress in detail.Answer:D. Detailing what and how the learner has been learning.