medium · LSAT Logical Reasoning
If the building is not retrofitted, it will be destroyed in a major earthquake. The building was destroyed in a major earthquake. Therefore, the building was not retrofitted.
The conclusion follows logically if which one of the following is assumed?
- Many buildings that were properly retrofitted survived the recent major earthquake.
- A building can be destroyed by a major earthquake only if it was not retrofitted.
- The building was located in a region that is prone to frequent major earthquakes.
- Retrofitting a building is an expensive and notoriously time-consuming process.
- Some buildings that were never retrofitted nonetheless survived the major earthquake.
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