What is sfumato? (In art)

A. The Italian word for soft light
B. A strong contrast between light and dark
C. A technique that visually unifies a painting hang a thin layer of tinted varnish
D. None of the above

C

Explanation:

In fine art, the term "sfumato" (derived from the Italian word fumo, meaning "smoke") refers to the technique of oil painting which colours or tones are blended in such a subtle manner that they melt into one another without perceptible transitions, lines or edges.

C

Explanation:

A technique that visually unifies a painting hang a thin layer of tinted varnish

based on the images pictured above, the major difference between the two cathedrals: the cathedral of notre dame and the amiens cathedral, is that the cathedral of notre dame emphasizes the horizontal lines while the amiens cathedral emphasizes the vertical lines.