(a) The band of 7 colours (violet, indigo, blue, green, yellow, orange & red) is known as spectrum.
(b) A form of printmaking where the image can only be made once is known as monoprinting.
(c) A prototype is an early sample, model, or release of a product built to test a concept or process.
(d) Choreography is the art of composing steps for a dance.
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