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
Aneeds a full plan is needed because you just can't go off low calories alone she needs a chart for what she eats from morning noon and night and stick with diet and exercise is also a necessity
Explanation:
Answer: The real answer is 40 degrees.
Explanation: However thats not an option, so be safe and go for 39