Final answer:
To represent a bitmap with less data, apply lossless compression or convert the image to a vector format, as increasing resolution or color depth would increase file size.
Step-by-step explanation:
To represent a bitmap image with less data, you would not increase the image resolution or use a higher color depth, as both of these would actually increase the file size. Instead, you can apply lossless compression, which reduces the file size without discarding any image data, thereby preserving the original quality of the photo. An example of lossless compression is the PNG format. Another option is to convert the bitmap image to a vector image format; vector images are not made of pixels but of paths and can be scaled without losing quality, often resulting in smaller file sizes for certain types of images.