B. Zaroff respects Rainsford and thinks that he will be a worthy opponent.
Zaroff knows Rainsford is intelligent and will be a worthy oppenent because he hasn't had one thus far in his game. He's heard of Rainsford and is aware of his celebrated status as a renowned big game hunter so he's confident in him.
The answer is A, uneven parallelism, because of "with" and "who".
Answer: A government is the system or group of people governing an organized community, generally a state. It can also describe the leadership of a supranational organization, such as the United Nations or the EU, or a political region, or local units, such as a county, city, or township. The Federal Government is composed of three distinct branches: legislative , executive , and judicial , whose powers are vested by the U.S. Constitution in the Congress, the President, and the Federal courts, respectively.
Hope this helps..... Stay safe and have a Merry Christmas!!!!!!! :D