'Metal' is related to 'Sculptor' as the raw material worked by an artist. In the same way, 'Canvas' is related to which practitioner who uses it as the primary medium?

Introduction / Context:
Analogies often encode “material : worker/artist” relationships. A sculptor works with metal, stone, or wood as materials. The prompt asks us to mirror that link with canvas.

Given Data / Assumptions:

• Metal is a material; sculptor is the artist who shapes it.
• Canvas is a material/support for an art form.
• We seek the professional who typically uses canvas as a primary working surface.

Concept / Approach:
The relational form is “material/support : practitioner.” Canvas is the standard support for painting; the practitioner is the painter. Nouns like “painting” or “colours” are products/materials, not practitioners. “Cloth” is a category, not a profession.

Step-by-Step Solution:
1) Decode the first pair: metal (material) : sculptor (artist who uses it).2) Map the second pair: canvas (material/support) : ? (artist who uses it).3) The correct practitioner is “painter.”

Verification / Alternative check:
In art terminology, painters commonly paint on canvas with oils or acrylics; thus, the pairing is standard in vocabulary tests.

Why Other Options Are Wrong:

• Cloth: A material category; not a practitioner.
• Colours: Materials/mediums, not a person.
• Painting: The finished product or process, not the practitioner.
• Curator: Manages collections; does not primarily use canvas as a working surface.

Common Pitfalls:
Choosing an associated object (colours, painting) instead of the role that uses the material (painter). Keep the relation type consistent across pairs.

Final Answer:
Painter