200 is the answer i hope this helps you
Answer:
i need options, since this is a broad question
Explanation:
I would say A. Because c and d r very dangerous if u think about it. And b is right in some situations. But if u do a then people can see whts going on if something happened because of the light. and it is safe. If wrong let me know. :D
Answer:
What does this mean I don't understand