Answer: A, from what I know you normally don’t put anything before or after nevertheless
(Also did you mean to put commas because I’m pretty sure those are commas not semicolons)
I wouldn't use the word "discovered" it just seems a bit off. I'd rewrite the sentence with a simpler word yet easy to say and understand: "When we searched the school for damage, a new broken window was found." I hope this helps you. My apologies if this is incorrect.
The answer is B.<span>Where can I substitute?</span>
