To determine which scale drawing is a dilation that increased the size of the original object, you would need to compare the size of each drawing to the size of the original object it represents.
Typically, a dilation enlarges the object while maintaining its shape. If you have visual access or measurements of these figures, look for the figure that appears larger than its original.
If you can’t access the images, I can’t specifically tell you which figure is enlarged. Please check the images to see which one represents an enlarged version of the original object.