Answer:
C) Incidentally
Explanation:
Personally I don't like any of these answer choices. However, this one makes the most sense in this context. The others would need a much different set-up earlier on in the passage. "Incidentally" does not require such a set up, which is why it is the only one that fits.
1. The dogs in my neighbour’s yard started barking.
2. The teacher asked the students in the back row of the classroom to please be quiet.
Answer:
?????????? ??????????? mmm