A and D. A covenant is similar to a deal with God. The deal that God gave the Israelites was that they would have a new home(Israel) and it will thrive and be wonderful and in return, they would be faithful to God. process of elimination Islam was not a religion during the Jewish covenant with God and "the gospels are the word of God" is a phrase in the new gospel (correct me if I'm wrong.) new gospel also was not written during the Jewish covenant with God.
The answer would be B , due to Mongolia's high altitude .. Mongolia and W.China recieves most of its precipitation during their long and cold winters. Hope this helps ;)