The correct answer is - B. War and instability in Somalia dramatically increased Somalian refugee applications to the US.
Somalia has been in a terrible state for quite some time and the country has totally cracked economically and politically, also the violence has increased, and people are living in terrible conditions and are happy if they survive through the day. Because of this, lots of Somalis are trying to escape from the country and migrate in a country where they can have a better life (usually it is the countries in the west). One of the prime targets has been the United States, and there's millions of people that were and are applying to get into the country, which of course presented a big challenge because it is not just the number in question, but also safety risks, the people are of a background that is not compatible with the western culture and way of life, etc.
