Final answer:
The best summary of Hans Cefalo's speech on the New York and Brooklyn Bridge is that the mayor discussed the bridge's history and significance, which fits with the broad historical context of New York's growth and infrastructure's role in it.
Step-by-step explanation:
The question asks for a summary of an excerpt from the opening ceremonies of the New York and Brooklyn Bridge by Hans Cefalo, Mayor of the City of Brooklyn. Based on various contextual references provided, the most accurate summary would be that the mayor discusses the history and significance of the New York and Brooklyn Bridge.
This choice best encapsulates the broader historical context of New York City's growth, and the role that significant infrastructure such as the Brooklyn Bridge played in it. The bridge symbolizes both technological progress and the connectivity that spurred economic development.
References to the era’s technological advances, New York City's competitive edge in transportation, and the visionary aspect of architectural undertakings such as the bridge contribute to this summary. However, without the actual excerpt from Hans Cefalo's speech, this is an educated guess based on available information regarding the historical and cultural significance of the bridge.