A recommendation flips when one contestable score moves by a single point. The recommendation is:

Answer

Not robust, and the response must say so

Options - A. Robust — a one-point move is within normal error - B. Not robust, and the response must say so - C. Proof that the matrix itself is wrong - D. A stage-4 concern, not a stage-3 one Why - A. A one-point move on a contestable score is exactly what a reader will try. If it flips the answer, the answer depends on a judgement. - B. Correct — say the winner is not robust, say what it turns on, and say what evidence would settle it. That is a finding, not a failure. - C. The matrix is a lens; it has shown that the choice is close. That is information, not an error. - D. Sensitivity is a stage-3 output — the sixth rubric line. Stage 4 inherits the finding and works with it.

authored (outline §M6, §cases); OpenStax Business 6.6; concept map G07