Even routine bridges represent enormous engineering achievements. A typical highway overpass must support vehicles weighing tens of tons while withstanding decades of traffic vibration, freeze-thaw cycles, and environmental corrosion. Civil engineers spend years designing structures whose only success is that drivers never notice them.
Which choice best describes the function of the last sentence in the text?
- A
It introduces a competing engineering field.
- B
It restates the second sentence in identical terms.
- Ccheck_circle
It distills the previous sentences into a paradoxical characterization of engineering success.
- D
It contradicts the claim about engineering achievements.
Explanation
The last sentence frames invisibility as the mark of success — a paradoxical distillation of the prior sentences. B captures this synthesizing move.