Given that in Latin, the word septem means seven, the word septentriones will tell us that seven stars make up the Big Dipper.
And if you know anything about the Big Dipper, you will know that it is true - there are seven stars in this asterism. These seven stars are Dubhe, Merak, Phecda, Megrez, Alioth, Mizar, and Alkaid, and they are part of the constellation Ursa Major.
Rainsford does not hold human life on the same level as animal life. For Rainsford hunting is a sport or a means to gain food, not a mere even to simply kill for the love of killing.
Zaroff's ideas counter this in that Zaroff has progressed to the point where killing humans, the most intelligent beings, has become a sport to him.
The bottom line is that the two men have different world views which influence their actions.
The correct answer is A. This is the case of using comma before a coordinating conjunction <em>and</em> because it links two independent clauses. We can observe that there two parts of this full sentence and each part is independent from each other. Both of them have their own subject and verb. Therefore, we are using a comma before <em>and</em>.
