Question butter

3.1 Boundaries - Parenthetical punctuation: commas, dashes, parentheses
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Butterfly is a 1988 painting by the Japanese artist Ay-O. Like many of Ay-O’s paintings, Butterfly, which portrays a swimmer performing the butterfly stroke, attempts to make use of the entire visual light blank sporting rainbow-striped goggles, the rainbow-hued swimmer splashes through a wavy rainbow of water.

Which choice completes the text so that it conforms to the conventions of Standard English?

A.

spectrum

B.

spectrum:

C.

spectrum while

D.

spectrum, while