We can obtain colored components (dye) from blue/black ink by

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Centrifugation

Evaporation

Winnowing

Fractional distillation

answer is B.

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Detailed Solution

Evaporation is the technique used to obtain the colored components from the blue/black ink.
Ink is a heterogeneous mixture of due and water that is a colloidal solution. Due to the difference in boiling points, when this mixture is heated, the water evaporates more quickly than the dye, which is derived from the blue/black ink.

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