Answer: I would say D. (or 4.)
Explanation: Because you start to get warm and sweaty at around 1 hour of exercise. And it reduces the risk of chronic diseases.
(Information found from https://www.cdc.gov physicalactivity, walking)
I think that it is B wave patterns good luck!!!!
>>>>>>>>>>>>>>>>>>>>>>.......... i honestly dont know sorry
Answer:
I believe that the answer ends most like a since humans live on the biosphere part of the world and we have affected the atmosphere around us causing to make it more dense and stuff