Which of the following best describes the primary difference between a scale drawing and a scale model?

A scale drawing is always smaller than the real object, while a scale model is always larger.

A scale drawing is a two-dimensional representation, while a scale model is three-dimensional.

A scale drawing uses inches and feet, while a scale model uses the metric system.

A scale drawing represents buildings, while a scale model represents vehicles.

In a scale drawing, what does the 'scale' define?

The number of objects in the drawing.

The ratio of a length in the drawing to the corresponding actual length.

The color scheme used in the drawing.