D. jack did not keep the fire going
Thornton Wilder's who is our Town incorporates unusual theatrical devices which are for creating a play which was radical in comparison to temperance plays of the time and the melodramas. The uniqueness on the narration of our Town uses asides to directly connect with the audience and to break the fourth wall.
The design set is so minimal such that it requires the audience to imagine the settings and props. Play breaks away from demands participation of the audience and from restrictions of realism. The whole of the play Wilder builds a theme of universality when referencing ideas and feelings that transcend location and time.
Through the use of flashbacks, he manipulates time, which emphasizes more on ideas that human life is being fleeting. He represents large numbers and presents town which is far away perspective to illustrate the idea such that human life is important in the context of the universe.
The correct answer is paradox.
Paradox is a figure of speech that combines two completely opposite things into one. In the excerpt above, we can see that the speaker is willing to wait for his/her loved one his/her entire life, however, only if they don't take too long to get to him/her. This is a paradox because they weren't willing to wait for them long in the first place, as it turns out.