Your answer is a, opinions expressed should be supported by important facts, examples, or personal experiences.
The punctuation for this sentence is incorrect. Since you are attempting to combine two independent clauses with a conjuctive adverb (however). The correct way to punctuate this sentence is:
"Halloween has come and gone; however, many kids still have lots of sugar in them."
Hope this helps!
I believe your answer for this problem is C
Both chose genres that present a true story of the Holocaust as one experienced it.