The right answer is "A. Never give up on your dreams"
The explanation for this answer is that the theme must be the subject that one wants to develop in the speech. Thus, only alternative A serves this purpose, since the other alternatives exposed in the question are not matters to be developed and rather parts of the speech that will strengthen the argument on the subject.
In first person, you're hearing the story from the point-of-view from one character, so the author would want the reader to identify with that character.
