What can be the basis for identifying collective creation among art types?

When the work is made through joint participation of a community or group

The governing concept is collective authorship or collective creation. Option A is correct because the work is developed through the shared participation of several people, a community, or a group whose ideas, labour, decisions, performance, or skills contribute to the result. The final work may not be attributable to one individual alone, even when particular members have different responsibilities. This idea can apply to community murals, group performances, shared crafts, festivals, and many traditional practices. The other options do not identify a creative relationship: a machine being closed is irrelevant, producing no object does not define collective art, and hiding art concerns visibility rather than how it was created.

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