The sentence that uses the best close-up words is A. Sara is studying French and German. The other sentences are specific enough, so they are not close-up words. Close-up words have to be very specific - so if Sara is pursuing a degree, a close-up word would be to specify what degree it is. Non-science degree is still way too broad to be considered a close-up word. B is also incorrect because you have to specify which languages. And A is correct because we know exactly which languages Sara is studying.