Final answer:
Adding noise to a digital photograph using photo editing software will make the photo appear more grainy.
Step-by-step explanation:
When adding noise to a digital photograph using photo editing software, it will make the photo appear more grainy. Noise is random variation in brightness or color information in images, and it can be likened to the graininess you might see in old film photographs. By adding noise, J.C. is introducing imperfections and randomness to the image, resulting in a more textured and grainy appearance.
Learn more about Affects of adding noise to a digital photograph