Which term describes an image in photography that is overly exposed to light?

The term that accurately describes an image in photography that is overly exposed to light is "blown light." When an image is blown out, it means that the highlights are so bright that they lose all detail, resulting in areas of pure white where no information can be discerned. This is often a consequence of too much light hitting the sensor or film, leading to a lack of contrast in those bright areas.

Other terms in the options relate to different concepts in photography. "Silhouetted" refers to a photographic effect where the subject is darker than the background, typically occurring when the subject is backlit, but this does not necessarily imply overexposure. "Saturated" usually describes colors that are intense and vivid, which can refer to an image that has been enhanced or manipulated rather than one that has been overexposed. "Contrast" pertains to the difference in brightness and color between the highlights and shadows in an image, but it does not specifically denote overexposure. Hence, "blown light" is the most precise term to indicate an image suffering from excessive exposure to light.