In A: it should be "I was" not "I were".
In B: it should be "lately you appear" not "you appears"
in C: this is correct! the subject is in agreement with the verb, and this is the correct answer.
in D: it should be "you are"
Answer:
Arguments are claims backed by reasons that are supported by evidence.
It's C, independent clause because those words can be turned into a sentence on it's own.
The answer is A.
The man expects to be able to travel long distances in extreme cold. The dog that he is traveling with knows this, but the man ignores the dog and advice from others. Eventually, he freezes to death because he cannot build a fire.