I believe the correct answer is <span>Zaroff has no conscience, while Rainsford does have a conscience.
As you can see in the excerpt, Zaroff is not opposed to murdering other people, which he considers to be just a type of hunting. He doesn't value human life at all, and is indifferent towards whether they live or die, which is why his character is different from that of Rainsford's.
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Grammar lays the groundwork for effective communication.
Grammatical errors come in many forms and all can easily confuse and obscure meaning. Some common errors are with sentence structure, subject/verb tense, punctuation, spelling, and other basic mechanics and parts of speech. Even something as simple as a misplaced comma can completely change the meaning of a sentence. For example: "Let's eat grandpa" vs. "Let's eat, grandpa."
Grammar makes written content more readable and in turn more interesting.
That's all I got, I hope this helps in some way or another! XP