The answer is B) due to the fact that it's a good topic to start off a paragraph with
Hope this helped :)
A. If either John or Gary fails to bring their power drill, we will not complete this job on time, which our boss will consider unacceptable.
Where is the question then?
A; start fires with kindling or other fire starters
Why? because this is causing a fire, which is not a safety precaution.
Hope this helps!
-Payshence