Based on the above, the author compares the baby's skin to option C. silk.
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The term comparison is known to be the act of evaluating or looking through things to be able to identify or see the reason that they are similar or not.
Note that it is also seen as the condition of being evaluated to ascertain if there are similarity or there are difference.
When one says that a baby's skin is smooth as silk. it is one that connote that the skin of the baby is flawless. Note that little baby are known to have soft skin that are so fragile in nature and thus they are often handled with care.
Therefore, from the excerpt above. looking at the last line, i quote "Tony was surprised how little Lon's fingers were and how soft the baby was. The baby's skin was as smooth as silk".
Therefore, Based on the above, the author compares the baby's skin to option C. silk.
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