Discussion
Polishing, as distinct from whitening, is carried out to
Answer: A
Correct answer: Improve appearance and gloss
Polishing follows whitening and removes only the last traces of bran and the fine flour adhering to the kernel, giving a smooth, glossy surface. Its purpose is appearance and market acceptance rather than the removal of any substantial layer.
Whitening is the operation that actually removes the bran and germ, and it is the one that determines the degree of milling. Polishing is done with a gentler abrasive or with a water mist, since by this stage further aggressive treatment would only break kernels.
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