medium · Act english
A student is writing an essay about the history of architecture. The student wants to revise the following sentence to provide the most specific supporting detail regarding the structural strength of a Roman arch: [Ancient builders used various methods to ensure their stone arches would not collapse under heavy weight.]
- Most Roman arches were constructed using local limestone because it was readily available and quite easy to shape.
- The precise distribution of gravity across the curved stones allowed the arch to support many tons of pressure.
- Stone arches were incredibly durable and stood for centuries without showing any signs of significant structural wear.
- Roman engineers utilized a central keystone to distribute weight, enabling the structure to hold up to 100,000 pounds.
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