A logical fallacy is a common error in reasoning.
The correct answer should be additionally.
The word additionally would provide the best transition between these two sentence. It is so because you have one idea in the first sentence, and then you want to show another idea very similar to the first one in the second sentence. Using additionally to convey that is the way to go.
Answer:
The obvious answer is B the other options would just be for quality (well not obvious but easy to figure out).
