Which sentence uses the subjunctive mood correctly?

A student is preparing for a presentation. They initially write a draft with numerous complex sentences containing multiple clauses. Upon reviewing their draft, they realize it might be difficult for the audience to follow. Which revision strategy would BEST help the student make their presentation more accessible and engaging?

在计算机网络中，OSI模型的哪一层主要负责数据的传输和错误检测？

在夜间通过拱桥时，应该如何使用车灯以确保安全通过？

在沟通中，情境的重要性体现在什么方面？