Why can expression change when the medium changes in art?

Because clay, colour, sound, and body give different experiences

The governing concept is that medium is part of artistic meaning. Each medium has different physical qualities, techniques, limits, textures, movement, sound, and ways of reaching the audience. Clay can communicate through weight, volume, touch, and three-dimensional form; paint can use colour, surface, layering, and brushwork; sound can use pitch, rhythm, silence, and duration; the body can communicate through movement and gesture. Consequently, changing the medium may change both the sensory experience and the emotional force of an idea. Option C is correct because it identifies these distinct experiences. Options A and B deny the medium’s influence, while D incorrectly claims that changing medium ends art.

This is a Class 9 Art Education question. Chapter: Colour Theory. Topic: Primary colours.