Fisk University was first
D, with the most simple. When writing speeches/voicing speeches, always go from simple to complex so your listeners or readers can follow the point you are trying to get across.
It's the first one because the 2nd isn't asking a question. Also, any chance of it being the second goes out the window when you see the 5:30, six? because both would have to marked with the same punctuation.
Hope this Helps!