To determine which figure in a scale drawing represents a dilation that increases the size of the original object, we typically look for a figure that is a larger version of the original object it represents.
Without the actual images, I can’t provide a specific answer, but you would want to look for a figure that appears larger compared to the others or the original. If you identify one of the figures (chair, tree, nut, or house) that is noticeably larger than its original representation, that would be the figure indicating dilation.
If you have any further description of the figures or any specific details, feel free to share and I can help analyze them!