What line reveals the speaker’s efforts to relate to the audience? But in the past few years, I have wanted to expand my horizons. I have wanted to forge a connection with far-off, exotic places. Perhaps you have felt stifled by the limits of our small town as well. My French class has opened my imagination to Quebec, Paris, and Abidjan!

i feel like it is actually b.

i think that it is (line 11)

the verbal in this sentence is an infinitive. when you want to know the reason of an action, you simply ask the question "why? ". once you know the reason you can answer with "because".

many times we don´t use the word "because" but we can use another expression and that is an "infinitive of purpose". example:

-why did your brother bring a book?

-he brought a book to study.

in the answer above you can see an example of an infinitive sentence, just like in the example of your text. "he couldn´t run fast enough to beat his older sister". so, the answer is infinitive.