What should be checked after creating the darkest tone?

Correct answer: Whether the other tones relate correctly to it

The governing concept is value control, or the relationship among light, middle, and dark tones. Once the darkest tone is established, it becomes a reference point for judging every other value. Therefore, option C is correct: check whether the remaining tones are light or dark enough in relation to it and whether the overall contrast supports the form. Pencil price, the drawing’s name, and paper brand do not determine tonal accuracy. This comparison prevents flat or exaggerated shading.