Op art, short for Optical art
Reading the texts, for me se letter B is the answer! :)
Blue and green is the name of it I am not exactly sure
To create Unity in a piece of art, everything needs to look as if it belongs together. <span>There are lots of ways to achieve unity within a work of art. Three ways to achieve unity are by proximity, repetition, and continuation. </span><span>Proximity implies that elements placed close together have a better chance of looking as though they belong together or are part of the same group. </span><span>Repetition implies that elements which repeat within a work of art will tend to unify a design. </span><span>Continuation is a way to achieve unity when one element of the composition is connected, usually by a line or edge, to another element in the composition.</span>
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