medium · LSAT Logical Reasoning

The flawed pattern of reasoning in the argument above is most similar to that in which one of the following?

1. The city must either raise taxes or cut services. Because the mayor has promised not to raise taxes, services will be cut.
2. Either we build a new school or we will have overcrowded classrooms. We have decided to build a new school, so we will not have overcrowded classrooms.
3. To graduate, you must pass either a math exam or a science exam. Since you didn't pass the math exam, you must pass the science exam.
4. We can go to the beach or go to the mountains. If we go to the beach, we will need sunscreen. So we will need sunscreen.
5. Either it will rain or it will be sunny. It did not rain. Therefore, it was sunny.

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