Checking a coloured picture in grey helps most in which decision?

Correct answer: Value structure and readability

Answer: A, value structure and readability. Converting or viewing a coloured picture in grey reduces the distraction of hue and lets the artist judge the light, middle, and dark areas more directly. This helps answer important questions: Does the main subject separate from the background? Is the focal point visible? Do the forms and depth remain understandable without relying on colour? B is not the main purpose, because surface texture depends on marks, edges, and material treatment and cannot be fully judged from greyscale alone. C is incorrect because warm and cool colour relationships require colour information, which greyscale removes. D is unrelated to the tonal check. A is correct because value structure supports visual organisation and readability. Memory cue: greyscale test removes hue so you can inspect light and dark.