Why is it difficult to fix the definition of art in one permanent line?

Because art changes with time, society, and expression

Art has no single permanent definition because it is a living and changing human activity. Different societies and historical periods value different subjects, materials, purposes, and forms of expression. A community may understand art through ritual or craft, while another may emphasize painting, performance, digital media, design, or personal experimentation. The meaning of an artwork can also change when its social context or audience changes. Therefore option D is correct: time, society, and modes of expression continually expand and reshape the idea of art. Option A is false because art is deeply connected with human experience. Option B is false because art forms are diverse, and C is false because artistic activity exists across cultures rather than in one country only.

This is a Class 9 Art Education question. Chapter: Introduction to Art. Topic: Meaning of art.