This is not an English question, it also is not very well written, but the answer is that bees are inactive at night except for the queen bee who is busy laying eggs. So they do not fly at night at all.
Answer: It might be 2 and 4, sorry if I'm wrong!
Explanation:
A.
At that point in the paragraph, the main idea switches from being about little Stenne to being about Father Stenne. It shifts to the people of Paris' opinions about him, from having described what little Stenne looked like. That's why this is where the paragraph should split and start the second one.