Answer:
c. because RAW files are proprietary.
Explanation:
When scanners and digital cameras are used to capture images that are uncompressed or minimally processed image file, it is known as a RAW image file.
Generally, this file type are usually very large in size because of their lossless quality and does not have any alteration and as such have not been processed; thus, cannot be printed.
The term RAW image file is generally used to describe a variety of file formats, which are sometimes known as digital raw captures because RAW files are proprietary.