Personally i think B because he says to exist is to think, meaning it is inseparable, you cannot exist if you don’t think basically
When combining two independent clauses, a comma must be placed between the two independent clauses in place of the conjunction. <span />
Looking up the word in the dictionary
<span>In the novel Frankenstein, what the creature's connection to nature suggests about him is that C. he is connected to Victor and has human feelings. Although he was created from the dead, he still has some human feelings remaining, such as love, and loneliness, and hatred, and fear, etc. He also feels very connected to his creator, Victor, which additionally shows his human emotions. We cannot know whether his love for nature is artistic, as he is still practically a "zombie," so option A is unlikely correct. B is also incorrect because it doesn't convey all of his emotions. D is definitely incorrect because there is more to Frankenstein's monster than just the feelings of possession and greed. </span>
The subjunctive mood is the best.
The subjunctive is rarely used in colloquial English. Totally irrelevant information, but... it is a relic from Latin, where there are many uses for a subjunctive. There is even a special conditional using the subjunctive mood that expresses the exact circumstances you described, which is usually called future less vivid.