The material that is related to medium is paint.
Explanation:
1. Clay is not directly related to medium in the context given.
2. Steel is not directly related to medium in the context given.
3. Paint, on the other hand, is a substance that is commonly used as a medium for artistic expression. Artists use paint to create their artwork on various surfaces like canvas, paper, or walls. The properties of paint, such as color, texture, and consistency, make it an essential medium in the field of visual arts.
Therefore, the correct answer related to medium from the options provided is B. Paint.
