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Verbal·Standard English Conventions·Boundaries

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The part of a compound that determines the compound’s color is __________ One example of a chromophore is hemoglobin, which gives human blood its red color.

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

A

called the chromophore,

B

called the chromophore:

C

called the chromophore;

D

called the chromophore.