Why can equal dot density in stippling make a face less natural?

Correct answer: क्योंकि त्वचा के कोमल मान-परिवर्तन गायब हो जाते हैं

The correct answer is C: soft value changes in the skin disappear. In stippling, light and dark are created by changing dot density. Fewer or more widely spaced dots leave a lighter value, while denser dots create a darker value. A face usually contains gradual changes across the forehead, cheeks, nose, chin, and shadow areas. If every region has the same density, these transitions are lost, so the face may look flat, harsh, or mask-like rather than naturally rounded. A is wrong because faces can certainly be drawn with dots. B is wrong because stippling can be used with monochrome or colour and does not automatically remove all colours. D is unrelated because dot density does not change the physical size of the frame. Use sparse dots in highlights, gradually denser dots in turning planes, and the greatest density in deeper shadows. Memory cue: in stippling, distance between dots controls light; density controls dark.