When adjusting brightness and contrast in an image during the editing process of photography, contrast refers to. A. the expansion of tonal separation in the shadow areas in your image

B. the overall increase or decrease of brightness in your image

C. the expansion of tonal separation in the highlight areas in your image

D. the expansion or reduction of tonal differences between the highlights and the shadows in your image

The gregorian chant was a major cultural milestone in the middle ages. it was one of the first codified forms of music meant to be played as written, where previously it was difficult to mass-produce and disseminate any music. what's more, these chants were also some of the first examples of musical notation: the notes and bars of today's music sheets are a reflection of centuries of evolution beginning with these chants. it became official throughout the entirety of the catholic church, meaning that nearly all of europe followed this musical notation and styling.