Answer:Breakthrough means a sudden dramatic, and important discovery or development.
Explanation: Its in a dictionary, if you have one!
I'm pretty sure it's A or B but I'm not sure exactly which one it is
They are used but fire extinguishers helps stop a fire amd a fire blanket is used to stop someone on fire so i think it would be true.
Answer:
I don't know it but on quizlet theirs summarys
