Most Yiddish-speaking Jews who arrived in the United States after the 1880s were from Russia, Ukraine, and parts of central Asia (such as present-day Kazakhstan). Many were fleeing the pogroms (anti-Jewish riots and attacks) being conducted in Russia and the Ukraine. The primary difference is that most Jews who arrived during this time period were Yiddish-speaking Hasidic Jews, rather than native-born Orthodox Jews.
I would say the optimistic tone is wear the writer says “she wrote in a telegram to another pilot”. Hope this helped!!
I believe the answer is A.