Concept:Portfolio assessment is a purposeful collection of student work that shows effort, progress, and achievement in a subject area.Explanation:Portfolio assessment includes self-selected work samples done by the student (B) and also samples that show the student's progress (D). Schools use portfolios to certify students' learning and skills (E). It is not a norm‑referenced test (A is false). The selection is done by the student, not only by the subject‑teacher (C is false). Therefore, only statements B, D, and E are true.Answer:C. B, D and E