Final answer:
The correct revision of the sentence 'A member of the audience raised their hand during the city council meeting' is 'A member of the audience raised her hand during the city council meeting.'
Step-by-step explanation:
The student is asking for a correct revision of Bryan's sentence: A member of the audience raised their hand during the city council meeting. The correct revision among the options provided that would maintain the original sentence structure and provide an appropriate pronoun reference is option C: A member of the audience raised her hand during the city council meeting. This option is grammatically correct and is gender specific, unlike the original sentence which used a plural pronoun 'their' for a singular noun 'member.'