Answer:
In the course of the construction of the Bridge a number of lives have been lost.
Explanation:
Objective language is the use of language or words in such a way that the speaker does not express any emotion, feeling, opinion, or personal beliefs. Rather, the statement will be completely devoid of any personal bias and based on data and quantifiable results.
In the given excerpt from the "Opening Ceremonies of the New York and Brooklyn Bridge" by Hon. Seth Low, Mayor of the City of Brooklyn, the sentence that contains an objective language is in his opening lines. The sentence "[I]n the course of the construction of the Bridge a number of lives have been lost." This statement simply puts forward the data, the facts of the bridge's construction, and does not stem from the Mayor's own opinions or emotions.
Thus, the correct answer is the first option.