Answer:
They show that the money for the project came from investors who believed in it.
Step-by-step explanation:
The construction of the New York and Brooklyn Bridge was one of the most glorious achievements that helped shape how the two cities were able to come to a better path of connection. The Bridge bridged the gap separating the two cities, thereby providing a better road of connectivity.
In his acceptance address, Seth Lowe, the Mayor stated how this bridge was "a triumph of faith". This phrase meant that this bridge was constructed because the investors held a mutual belief in the ability to construct and make difference in its construction.
Thus, the correct answer is the first option.