Answer:
The answer to your question would be that in the sentence that the underlined verb is in the subjunctive mood is B, Shannon asks that everyone meet at 8 o'clock.
Step-by-step explanation:
The subjunctive mood is used to express a wish, a suggestion, or a command that is contrary to fact. The mood of the verb states how the verb should be regarded, that is, if it should be understood as a fact, a command, a wish, or an uncertainty. Moreover, there are verbs that attract the use of this mood (ask, command, demand, recommend, suggest, etc).