Discussion
Which of the following is/are NOT a pigment?
Answer: B
Myricetin is the one that is not a pigment, according to the key: it is a flavonol, a colourless to pale yellow compound. Anthocyanins and betacyanins are plant pigments (red to blue and red-violet) and lutein is a yellow carotenoid pigment.
I could not confirm from a source that myricetin counts as a non-pigment, so the choice rests on the key.
Anthocyanins give red, blue and purple colour, betacyanins give red-violet, and lutein gives yellow. Myricetin is a flavonol that has little visible colour, which is why the key treats it as not a pigment.
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