B.serve hope this helps sorry if it’s wrong
Answer:
<h2>Symbol</h2>
Explanation:
A symbol is a material object something used for representing something else; often something immaterial; emblem, token, or sign. a letter, figure, or other character or mark or a combination of letters and so on
The author's purpose is to give an example of a disadvantage or unfairness between being colored or being white and make the reader more sympathetic to the circumstance.
The answer is C hope it helps