Answer:
What details are unclear. You want to find the answers within the text and realize your confusion.
Answer:
the answer is B. Because the names of places begins with a capital letter
The statement about connecting paragraphs which is correct is A. You can use a pointing word that refers to a word in the previous paragraph.
C is incorrect because it isn't forbidden to do so, although it is frowned upon. D is incorrect because that is not enough. B doesn't even have an answer.
Like, you have no choice but to do it.