I’m not sure but I think it’s b.
I think the answer is D.) To fly
I searched what infinitive means and this is what I got.
Try this summary of common sense on spark notes it helped me when i had to do similar questions http://www.sparknotes.com/lit/commonsense/summary.html
Keeping up with the Joneses is not a distinctly American concept. It is simply being jealous of your neighbors and striving to be like them.
