which scale drawing is a dilation that decreased the size of the original object it represents

The scale drawing that is a dilation that decreased the size of the original object it represents would have a scale factor less than 1. In other words, the proportion of the size of the drawing to the actual object would be smaller than 1.

whats the answer

The answer is a scale drawing with a scale factor less than 1. This means that the size of the drawing is smaller than the size of the original object it represents.