What can the relation between shape and colour change in composition?

Attention, mood, and recognition

Shape and colour work together to influence how a viewer reads a composition. A strong colour can make a shape attract attention, while a soft or dull colour may make it recede. Colour can also make a shape feel cheerful, calm, threatening, warm, or distant, depending on the visual context. When a familiar shape is given a distinctive colour, it may become easier to recognize as well.

Option A is correct because the shape-colour relationship can change attention, mood, and recognition. The other choices describe physical properties or an impossible result: colour does not change the actual thickness of the paper, the age of a brush, or create a literal sound from a picture. The answer follows from understanding colour as an element that modifies the visual and emotional effect of form.

This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Shape.