50.

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

The previous sentence "I started the trek to Brooklyn". The latter sentence "Although Frank Sinatra sang about the beautiful and sacred scenery of this bridge, the first sight I saw was not sacred" has no strong logical relationship between the previous sentence and the latter sentence, so no correlative adverb is needed. Furthermore, another exposition of the same argument is not met here.