If two students record different colours for the same object what is a better scientific approach?

Correct answer: Observe again under the same light using a standard colour chart

Different colour records may result from differences in lighting, viewing position, personal colour perception, or the names students choose for shades. A scientific observation should therefore be made under controlled and clearly described conditions. Repeating the observation under the same light reduces the effect of changing illumination. A standard colour chart gives observers common reference points, so terms such as light blue, dark blue, or green are used more consistently. This improves agreement without pretending that an uncertain observation is already correct.

The students should compare the object again, preferably together, under the same light and with the chart, and record the method used. Option D is correct because it combines repetition with standardisation. Accepting one statement without checking is not objective, deleting both results loses information, and guessing introduces rather than reduces uncertainty. The aim is to make the observation more reliable and reproducible.