They are not in the cartoon above because they wouldn't fit. i think that may be the correct answer.
<span>Either
to listen or to contemplate. Listen to what the speaker has got to say, to hear
and feel the emotions he is trying to convey, to criticize his speech either positively
or negatively. Contemplate to the lessons or learnings they have gathered upon listening.
They are trying to recall the experiences they had before, connect it to the
speech, find meaning with it and apply it in their daily lives. Or they are
simply in awe of how the speech got in touch with their feelings.</span>
The correct answer is b. The James Madison Memorial Building, built in 1981, houses the Folger Shakespeare Library
In this case, it is correctly used because the "built in 1981" is an apposition separated with commas.
The answer is - ironic and witty