Brush is to paint as what is to sculpt?

The relationship in the question establishes a tool and its corresponding medium or purpose. A brush is used to apply paint when creating a painting. Similarly, a chisel is a tool that is specifically utilized in the process of sculpting. Thus, the connection between brush and paint is mirrored by the connection between chisel and sculpt, making this the correct pairing.

In contrast, while a pencil is involved in drawing, it does not directly align with sculpting in the way that a chisel does. The other options do not maintain the same functional relationship. Data and code pertain more to information and programming rather than a direct tool-to-craft connection. Lastly, a photograph and a camera represent different aspects of capturing images rather than relating to a specific artistic technique or medium. Therefore, chisel to sculpt forms the strongest parallel in the context provided.