To find smaller scale drawings of the original photograph (6 inches by 4 inches), we need to scale down the dimensions while maintaining the same ratio. The original ratio is \( \frac{6}{4} \) or \( \frac{3}{2} \).
Now, let's analyze the options provided for smaller dimensions:
- 12 inches by 8 inches: This is not smaller; it's twice the size of the original dimensions.
- 1.5 inches by 1 inch: The ratio here is \( \frac{1.5}{1} = 1.5 \), which simplifies to \( \frac{3}{2} \), maintaining the same aspect ratio. This is a valid smaller drawing.
- 2 inches by 1 inch: The ratio here is \( \frac{2}{1} = 2 \), which does not maintain the original aspect ratio of \( \frac{3}{2} \).
- 1 inch by 0.5 inches: The ratio here is \( \frac{1}{0.5} = 2 \), which also does not maintain the original aspect ratio.
The only option that represents a smaller scale drawing of the original printed photograph while maintaining the correct aspect ratio is:
1.5 inches by 1 inch.