Given an image or animation of a body (the Sun, a named non-Sun star, a planet, a moon), the learner answers in two parts: Q1 'Does this body produce its own light or reflect?' (correct: 'produces' for stars, 'reflects' for planets and moons) and Q2 'Why?' (correct: 'because it is a star' for produces; 'because it is a planet' or 'because it is a moon, not a star' for reflects). The learner correctly classifies the Moon as a reflector (NOT a light source) — the dominant pre-existing misrule.