A 'Body' in 3D modeling refers to what element?

In 3D modeling, a 'Body' specifically refers to a solid geometric shape that is created based on 2D sketches. The process typically involves defining a 2D profile, which can then be extruded, revolved, or otherwise manipulated to form a three-dimensional object. This transformation from 2D to 3D is fundamental in modeling, as it allows designers to create complex shapes and forms that are essential in fields such as product design, engineering, and architecture.

The other options provided do not accurately encapsulate the concept of a 'Body' in this context. An assembly of components refers to a collection of multiple parts that work together, rather than a singular solid form. A type of drawing view pertains to how a 3D object is presented in 2D formats, like orthographic projections or isometric views, which is separate from the actual solid body itself. Lastly, a selection of tools in design software refers to the functionalities provided to assist with design tasks but does not define a structural entity like a body in 3D modeling. This distinction is critical for understanding the fundamentals of 3D design software and modeling techniques.