Answers will vary, but may include the following: The type of sculpture depends on the design and final product the artist wishes to produce. The decision of what type of sculpture may be influenced by the environment it will be shown in, the tool and materials the arts has to work with, the time an artist has to create a piece, and/or the purpose of the sculpture.
The answer to that would be: He used a monochromatic color scheme, which occurs when one color predominates, shades of black, tints of white, values of a hue.
