maximum load the bridge can support cost of material used to build the bridge percent of materials that can be recycled speed with which the bridge can be constructed
I gave my students this multiple choice question: An engineer is using a computer to design a bridge. Which test is the most important for safety purposes?

Only one answer is correct among these 4 choices:
- maximum load the bridge can support
- cost of material used to build the bridge
- percent of materials that can be recycled
- speed with which the bridge can be constructed

Could you tell me which one is correct?

maximum load the bridge can support